77257012 has 24 divisors (see below), whose sum is σ = 155219456. Its totient is φ = 32959008.

The previous prime is 77257009. The next prime is 77257013. The reversal of 77257012 is 21075277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77257013) 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 7 ways as a sum of consecutive naturals, for example, 58 + ... + 12430.

Almost surely, 2^77257012 is an apocalyptic number.

It is an amenable number.

77257012 is an abundant number, since it is smaller than the sum of its proper divisors (77962444).

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

77257012 is a wasteful number, since it uses less digits than its factorization.

77257012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12607 (or 12605 counting only the distinct ones).

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 77257012 is about 8789.5968053148. The cubic root of 77257012 is about 425.9048991647.

The spelling of 77257012 in words is "seventy-seven million, two hundred fifty-seven thousand, twelve".