77323716 has 18 divisors (see below), whose sum is σ = 195457262. Its totient is φ = 25774560.

The previous prime is 77323709. The next prime is 77323733. The reversal of 77323716 is 61732377.

It can be written as a sum of positive squares in only one way, i.e., 62346816 + 14976900 = 7896^2 + 3870^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2147881 = 77323716 / (7 + 7 + 3 + 2 + 3 + 7 + 1 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1073905 + ... + 1073976.

Almost surely, 2^77323716 is an apocalyptic number.

It is an amenable number.

77323716 is an abundant number, since it is smaller than the sum of its proper divisors (118133546).

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

77323716 is a wasteful number, since it uses less digits than its factorization.

77323716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147891 (or 2147886 counting only the distinct ones).

The product of its digits is 37044, while the sum is 36.

The square root of 77323716 is about 8793.3904723946. The cubic root of 77323716 is about 426.0274398777.

It can be divided in two parts, 7732371 and 6, that added together give a palindrome (7732377).

The spelling of 77323716 in words is "seventy-seven million, three hundred twenty-three thousand, seven hundred sixteen".