77996361 has 8 divisors (see below), whose sum is σ = 104488864. Its totient is φ = 51750720.

The previous prime is 77996351. The next prime is 77996383. The reversal of 77996361 is 16369977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-77996361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 77996361.

It is not an unprimeable number, because it can be changed into a prime (77996351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60976 + ... + 62241.

It is an arithmetic number, because the mean of its divisors is an integer number (13061108).

Almost surely, 2^77996361 is an apocalyptic number.

It is an amenable number.

77996361 is a deficient number, since it is larger than the sum of its proper divisors (26492503).

77996361 is a wasteful number, since it uses less digits than its factorization.

77996361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123431.

The product of its digits is 428652, while the sum is 48.

The square root of 77996361 is about 8831.5548461185. The cubic root of 77996361 is about 427.2592235344.

The spelling of 77996361 in words is "seventy-seven million, nine hundred ninety-six thousand, three hundred sixty-one".