78644796 has 12 divisors (see below), whose sum is σ = 183504552. Its totient is φ = 26214928.

The previous prime is 78644789. The next prime is 78644803. The reversal of 78644796 is 69744687.

It is an interprime number because it is at equal distance from previous prime (78644789) and next prime (78644803).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3276855 + ... + 3276878.

It is an arithmetic number, because the mean of its divisors is an integer number (15292046).

Almost surely, 2^78644796 is an apocalyptic number.

It is an amenable number.

78644796 is an abundant number, since it is smaller than the sum of its proper divisors (104859756).

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

78644796 is a wasteful number, since it uses less digits than its factorization.

78644796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6553740 (or 6553738 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 51.

The square root of 78644796 is about 8868.1901197482. The cubic root of 78644796 is about 428.4399862941.

The spelling of 78644796 in words is "seventy-eight million, six hundred forty-four thousand, seven hundred ninety-six".