7640394264 has 24 divisors (see below), whose sum is σ = 20692734660. Its totient is φ = 2546798064.

The previous prime is 7640394257. The next prime is 7640394301. The reversal of 7640394264 is 4624930467.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53058222 + ... + 53058365.

Almost surely, 2^7640394264 is an apocalyptic number.

It is an amenable number.

7640394264 is an abundant number, since it is smaller than the sum of its proper divisors (13052340396).

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

7640394264 is a wasteful number, since it uses less digits than its factorization.

7640394264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106116599 (or 106116592 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The square root of 7640394264 is about 87409.3488363802. The cubic root of 7640394264 is about 1969.5722798729.

The spelling of 7640394264 in words is "seven billion, six hundred forty million, three hundred ninety-four thousand, two hundred sixty-four".