77996906 has 16 divisors (see below), whose sum is σ = 126326088. Its totient is φ = 35904000.

The previous prime is 77996903. The next prime is 77996909. The reversal of 77996906 is 60969977.

77996906 is nontrivially palindromic in base 12.

It is an interprime number because it is at equal distance from previous prime (77996903) and next prime (77996909).

It can be written as a sum of positive squares in 4 ways, for example, as 77880625 + 116281 = 8825^2 + 341^2 .

It is not an unprimeable number, because it can be changed into a prime (77996903) 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, 6686 + ... + 14166.

Almost surely, 2^77996906 is an apocalyptic number.

77996906 is a deficient number, since it is larger than the sum of its proper divisors (48329182).

77996906 is a wasteful number, since it uses less digits than its factorization.

77996906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7897.

The product of its (nonzero) digits is 1285956, while the sum is 53.

The square root of 77996906 is about 8831.5857013336. The cubic root of 77996906 is about 427.2602186908.

The spelling of 77996906 in words is "seventy-seven million, nine hundred ninety-six thousand, nine hundred six".