7040204581 has 4 divisors (see below), whose sum is σ = 7139362464. Its totient is φ = 6941046700.

The previous prime is 7040204569. The next prime is 7040204593. The reversal of 7040204581 is 1854020407.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1854020407 = 37993 ⋅48799.

It is an interprime number because it is at equal distance from previous prime (7040204569) and next prime (7040204593).

It is a cyclic number.

It is not a de Polignac number, because 7040204581 - 2¹⁹ = 7039680293 is a prime.

It is a super-2 number, since 2×7040204581² = 99128961084666771122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7040204531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49578835 + ... + 49578976.

It is an arithmetic number, because the mean of its divisors is an integer number (1784840616).

Almost surely, 2^7040204581 is an apocalyptic number.

7040204581 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7040204581 is a deficient number, since it is larger than the sum of its proper divisors (99157883).

7040204581 is an equidigital number, since it uses as much as digits as its factorization.

7040204581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99157882.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 7040204581 is about 83905.9269718177. The cubic root of 7040204581 is about 1916.5865076730.

Adding to 7040204581 its reverse (1854020407), we get a palindrome (8894224988).

The spelling of 7040204581 in words is "seven billion, forty million, two hundred four thousand, five hundred eighty-one".