7605497981 has 4 divisors (see below), whose sum is σ = 7622666592. Its totient is φ = 7588329372.

The previous prime is 7605497969. The next prime is 7605497989. The reversal of 7605497981 is 1897945067.

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.

It is a cyclic number.

It is not a de Polignac number, because 7605497981 - 2³⁰ = 6531756157 is a prime.

It is a super-2 number, since 2×7605497981² (a number of 21 digits) 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 (7605497989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8583641 + ... + 8584526.

It is an arithmetic number, because the mean of its divisors is an integer number (1905666648).

Almost surely, 2^7605497981 is an apocalyptic number.

It is an amenable number.

7605497981 is a deficient number, since it is larger than the sum of its proper divisors (17168611).

7605497981 is a wasteful number, since it uses less digits than its factorization.

7605497981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17168610.

The product of its (nonzero) digits is 3810240, while the sum is 56.

The square root of 7605497981 is about 87209.5062536189. The cubic root of 7605497981 is about 1966.5691339387.

The spelling of 7605497981 in words is "seven billion, six hundred five million, four hundred ninety-seven thousand, nine hundred eighty-one".