77457012 has 12 divisors (see below), whose sum is σ = 180733056. Its totient is φ = 25819000.

The previous prime is 77456983. The next prime is 77457041. The reversal of 77457012 is 21075477.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (77456983) and next prime (77457041).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3227364 + ... + 3227387.

It is an arithmetic number, because the mean of its divisors is an integer number (15061088).

Almost surely, 2^77457012 is an apocalyptic number.

It is an amenable number.

77457012 is an abundant number, since it is smaller than the sum of its proper divisors (103276044).

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

77457012 is a wasteful number, since it uses less digits than its factorization.

77457012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6454758 (or 6454756 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 33.

The square root of 77457012 is about 8800.9665378298. The cubic root of 77457012 is about 426.2721045861.

The spelling of 77457012 in words is "seventy-seven million, four hundred fifty-seven thousand, twelve".