78008764 has 24 divisors (see below), whose sum is σ = 138510288. Its totient is φ = 38438400.

The previous prime is 78008731. The next prime is 78008771. The reversal of 78008764 is 46780087.

It is a congruent number.

It is an unprimeable number.

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, 142339 + ... + 142885.

It is an arithmetic number, because the mean of its divisors is an integer number (5771262).

Almost surely, 2^78008764 is an apocalyptic number.

It is an amenable number.

78008764 is a deficient number, since it is larger than the sum of its proper divisors (60501524).

78008764 is a wasteful number, since it uses less digits than its factorization.

78008764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005 (or 1003 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 78008764 is about 8832.2570161879. The cubic root of 78008764 is about 427.2818699554.

The spelling of 78008764 in words is "seventy-eight million, eight thousand, seven hundred sixty-four".