7664252657 has 4 divisors (see below), whose sum is σ = 7676099136. Its totient is φ = 7652406180.

The previous prime is 7664252653. The next prime is 7664252689. The reversal of 7664252657 is 7562524667.

It is a happy number.

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 7664252657 - 2² = 7664252653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7664252653) 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, 5922269 + ... + 5923562.

It is an arithmetic number, because the mean of its divisors is an integer number (1919024784).

Almost surely, 2^7664252657 is an apocalyptic number.

It is an amenable number.

7664252657 is a deficient number, since it is larger than the sum of its proper divisors (11846479).

7664252657 is a wasteful number, since it uses less digits than its factorization.

7664252657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11846478.

The product of its digits is 4233600, while the sum is 50.

The square root of 7664252657 is about 87545.7175251879. The cubic root of 7664252657 is about 1971.6202545516.

The spelling of 7664252657 in words is "seven billion, six hundred sixty-four million, two hundred fifty-two thousand, six hundred fifty-seven".