77436416 has 20 divisors (see below), whose sum is σ = 154722612. Its totient is φ = 38717952.

The previous prime is 77436391. The next prime is 77436431. The reversal of 77436416 is 61463477.

It is a self number, because there is not a number n which added to its sum of digits gives 77436416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75110 + ... + 76133.

Almost surely, 2^77436416 is an apocalyptic number.

It is an amenable number.

77436416 is a deficient number, since it is larger than the sum of its proper divisors (77286196).

77436416 is an equidigital number, since it uses as much as digits as its factorization.

77436416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151261 (or 151245 counting only the distinct ones).

The product of its digits is 84672, while the sum is 38.

The square root of 77436416 is about 8799.7963612802. The cubic root of 77436416 is about 426.2343189881.

The spelling of 77436416 in words is "seventy-seven million, four hundred thirty-six thousand, four hundred sixteen".