7640704 has 16 divisors (see below), whose sum is σ = 15221970. Its totient is φ = 3820288.

The previous prime is 7640683. The next prime is 7640707. The reversal of 7640704 is 4070467.

It can be written as a sum of positive squares in only one way, i.e., 7617600 + 23104 = 2760^2 + 152^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (7640707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29719 + ... + 29974.

Almost surely, 2^7640704 is an apocalyptic number.

It is an amenable number.

7640704 is a deficient number, since it is larger than the sum of its proper divisors (7581266).

7640704 is an equidigital number, since it uses as much as digits as its factorization.

7640704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59707 (or 59695 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 7640704 is about 2764.1823384140. The cubic root of 7640704 is about 196.9598894520.

The spelling of 7640704 in words is "seven million, six hundred forty thousand, seven hundred four".