78764396 has 24 divisors (see below), whose sum is σ = 140532336. Its totient is φ = 38617920.

The previous prime is 78764393. The next prime is 78764419. The reversal of 78764396 is 69346787.

It is not an unprimeable number, because it can be changed into a prime (78764393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73706 + ... + 74766.

It is an arithmetic number, because the mean of its divisors is an integer number (5855514).

Almost surely, 2^78764396 is an apocalyptic number.

It is an amenable number.

78764396 is a deficient number, since it is larger than the sum of its proper divisors (61767940).

78764396 is a wasteful number, since it uses less digits than its factorization.

78764396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409 (or 1407 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 50.

The square root of 78764396 is about 8874.9307602933. The cubic root of 78764396 is about 428.6570613436.

The spelling of 78764396 in words is "seventy-eight million, seven hundred sixty-four thousand, three hundred ninety-six".