77706516 has 12 divisors (see below), whose sum is σ = 181315232. Its totient is φ = 25902168.

The previous prime is 77706493. The next prime is 77706539. The reversal of 77706516 is 61560777.

It is an interprime number because it is at equal distance from previous prime (77706493) and next prime (77706539).

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

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3237760 + ... + 3237783.

Almost surely, 2^77706516 is an apocalyptic number.

It is an amenable number.

77706516 is an abundant number, since it is smaller than the sum of its proper divisors (103608716).

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

77706516 is a wasteful number, since it uses less digits than its factorization.

77706516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475550 (or 6475548 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 39.

The square root of 77706516 is about 8815.1299479928. The cubic root of 77706516 is about 426.7293156161.

The spelling of 77706516 in words is "seventy-seven million, seven hundred six thousand, five hundred sixteen".