7661604 has 12 divisors (see below), whose sum is σ = 17877104. Its totient is φ = 2553864.

The previous prime is 7661603. The next prime is 7661639. The reversal of 7661604 is 4061667.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (7661603) 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, 319222 + ... + 319245.

Almost surely, 2^7661604 is an apocalyptic number.

It is an amenable number.

7661604 is an abundant number, since it is smaller than the sum of its proper divisors (10215500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7661604 is a wasteful number, since it uses less digits than its factorization.

7661604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638474 (or 638472 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 7661604 is about 2767.9602598303. The cubic root of 7661604 is about 197.1393107052.

The spelling of 7661604 in words is "seven million, six hundred sixty-one thousand, six hundred four".