7420654081 has 4 divisors (see below), whose sum is σ = 7457944000. Its totient is φ = 7383364164.

The previous prime is 7420654061. The next prime is 7420654121. The reversal of 7420654081 is 1804560247.

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: 1804560247 = 7 ⋅257794321.

It is a cyclic number.

It is not a de Polignac number, because 7420654081 - 2⁷ = 7420653953 is a prime.

It is a super-2 number, since 2×7420654081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7420654081.

It is not an unprimeable number, because it can be changed into a prime (7420654061) 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, 18644661 + ... + 18645058.

It is an arithmetic number, because the mean of its divisors is an integer number (1864486000).

Almost surely, 2^7420654081 is an apocalyptic number.

It is an amenable number.

7420654081 is a deficient number, since it is larger than the sum of its proper divisors (37289919).

7420654081 is a wasteful number, since it uses less digits than its factorization.

7420654081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37289918.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 7420654081 is about 86143.2184272215. The cubic root of 7420654081 is about 1950.5064720809.

The spelling of 7420654081 in words is "seven billion, four hundred twenty million, six hundred fifty-four thousand, eighty-one".