77013213 has 48 divisors (see below), whose sum is σ = 118506240. Its totient is φ = 44301312.

The previous prime is 77013193. The next prime is 77013221. The reversal of 77013213 is 31231077.

It is not a de Polignac number, because 77013213 - 2⁶ = 77013149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77013263) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 865273 + ... + 865361.

It is an arithmetic number, because the mean of its divisors is an integer number (2468880).

Almost surely, 2^77013213 is an apocalyptic number.

It is an amenable number.

77013213 is a deficient number, since it is larger than the sum of its proper divisors (41493027).

77013213 is a wasteful number, since it uses less digits than its factorization.

77013213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 24.

The square root of 77013213 is about 8775.7172356452. The cubic root of 77013213 is about 425.4564194667.

The spelling of 77013213 in words is "seventy-seven million, thirteen thousand, two hundred thirteen".