78776474 has 8 divisors (see below), whose sum is σ = 135045408. Its totient is φ = 33761340.

The previous prime is 78776471. The next prime is 78776479. The reversal of 78776474 is 47467787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (78776471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2813432 + ... + 2813459.

It is an arithmetic number, because the mean of its divisors is an integer number (16880676).

Almost surely, 2^78776474 is an apocalyptic number.

78776474 is a deficient number, since it is larger than the sum of its proper divisors (56268934).

78776474 is a wasteful number, since it uses less digits than its factorization.

78776474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5626900.

The product of its digits is 1843968, while the sum is 50.

The square root of 78776474 is about 8875.6111902223. The cubic root of 78776474 is about 428.6789708003.

The spelling of 78776474 in words is "seventy-eight million, seven hundred seventy-six thousand, four hundred seventy-four".