76648657 has 4 divisors (see below), whose sum is σ = 77156416. Its totient is φ = 76140900.

The previous prime is 76648633. The next prime is 76648687. The reversal of 76648657 is 75684667.

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 a de Polignac number, because none of the positive numbers 2^k-76648657 is a prime.

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 76648657.

It is not an unprimeable number, because it can be changed into a prime (76648687) 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, 253653 + ... + 253954.

It is an arithmetic number, because the mean of its divisors is an integer number (19289104).

Almost surely, 2^76648657 is an apocalyptic number.

It is an amenable number.

76648657 is a deficient number, since it is larger than the sum of its proper divisors (507759).

76648657 is a wasteful number, since it uses less digits than its factorization.

76648657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507758.

The product of its digits is 1693440, while the sum is 49.

The square root of 76648657 is about 8754.9218728667. The cubic root of 76648657 is about 424.7840323719.

The spelling of 76648657 in words is "seventy-six million, six hundred forty-eight thousand, six hundred fifty-seven".