77008072 has 16 divisors (see below), whose sum is σ = 144498060. Its totient is φ = 38475264.

The previous prime is 77008069. The next prime is 77008081. The reversal of 77008072 is 27080077.

It can be written as a sum of positive squares in 2 ways, for example, as 72488196 + 4519876 = 8514^2 + 2126^2 .

77008072 is a Rhonda number in base 12.

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, 11508 + ... + 16924.

Almost surely, 2^77008072 is an apocalyptic number.

It is an amenable number.

77008072 is a deficient number, since it is larger than the sum of its proper divisors (67489988).

77008072 is a wasteful number, since it uses less digits than its factorization.

77008072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7200 (or 7196 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 77008072 is about 8775.4243202252. The cubic root of 77008072 is about 425.4469521730.

The spelling of 77008072 in words is "seventy-seven million, eight thousand, seventy-two".