77213634 has 8 divisors (see below), whose sum is σ = 154427280. Its totient is φ = 25737876.

The previous prime is 77213629. The next prime is 77213659. The reversal of 77213634 is 43631277.

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

77213634 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 77213595 and 77213604.

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 3 ways as a sum of consecutive naturals, for example, 6434464 + ... + 6434475.

It is an arithmetic number, because the mean of its divisors is an integer number (19303410).

Almost surely, 2^77213634 is an apocalyptic number.

77213634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77213634 is a wasteful number, since it uses less digits than its factorization.

77213634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12868944.

The product of its digits is 21168, while the sum is 33.

The square root of 77213634 is about 8787.1288826328. The cubic root of 77213634 is about 425.8251723711.

The spelling of 77213634 in words is "seventy-seven million, two hundred thirteen thousand, six hundred thirty-four".