7705664 has 14 divisors (see below), whose sum is σ = 15291054. Its totient is φ = 3852800.

The previous prime is 7705651. The next prime is 7705669. The reversal of 7705664 is 4665077.

It can be written as a sum of positive squares in only one way, i.e., 4494400 + 3211264 = 2120^2 + 1792^2 .

It is not an unprimeable number, because it can be changed into a prime (7705669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60137 + ... + 60264.

Almost surely, 2^7705664 is an apocalyptic number.

It is an amenable number.

7705664 is a deficient number, since it is larger than the sum of its proper divisors (7585390).

7705664 is a wasteful number, since it uses less digits than its factorization.

7705664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120413 (or 120403 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 7705664 is about 2775.9077794480. The cubic root of 7705664 is about 197.5164885022.

The spelling of 7705664 in words is "seven million, seven hundred five thousand, six hundred sixty-four".