77217616 has 40 divisors (see below), whose sum is σ = 174631680. Its totient is φ = 32386944.

The previous prime is 77217593. The next prime is 77217617. The reversal of 77217616 is 61671277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77217617) 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, 2071 + ... + 12598.

It is an arithmetic number, because the mean of its divisors is an integer number (4365792).

Almost surely, 2^77217616 is an apocalyptic number.

It is an amenable number.

77217616 is an abundant number, since it is smaller than the sum of its proper divisors (97414064).

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

77217616 is a wasteful number, since it uses less digits than its factorization.

77217616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14731 (or 14725 counting only the distinct ones).

The product of its digits is 24696, while the sum is 37.

The square root of 77217616 is about 8787.3554611157. The cubic root of 77217616 is about 425.8324923508.

The spelling of 77217616 in words is "seventy-seven million, two hundred seventeen thousand, six hundred sixteen".