7640764 has 24 divisors (see below), whose sum is σ = 13724928. Its totient is φ = 3720960.

The previous prime is 7640749. The next prime is 7640767. The reversal of 7640764 is 4670467.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39909 + ... + 40099.

It is an arithmetic number, because the mean of its divisors is an integer number (571872).

Almost surely, 2^7640764 is an apocalyptic number.

It is an amenable number.

7640764 is a deficient number, since it is larger than the sum of its proper divisors (6084164).

7640764 is a wasteful number, since it uses less digits than its factorization.

7640764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 7640764 is about 2764.1931915118. The cubic root of 7640764 is about 196.9604050050.

The spelling of 7640764 in words is "seven million, six hundred forty thousand, seven hundred sixty-four".