77516005 has 16 divisors (see below), whose sum is σ = 112561920. Its totient is φ = 50026752.

The previous prime is 77515993. The next prime is 77516009. The reversal of 77516005 is 50061577.

It is a cyclic number.

It is not a de Polignac number, because 77516005 - 2¹¹ = 77513957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77516009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64545 + ... + 65734.

It is an arithmetic number, because the mean of its divisors is an integer number (7035120).

Almost surely, 2^77516005 is an apocalyptic number.

It is an amenable number.

77516005 is a deficient number, since it is larger than the sum of its proper divisors (35045915).

77516005 is a wasteful number, since it uses less digits than its factorization.

77516005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130308.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 77516005 is about 8804.3174068181. The cubic root of 77516005 is about 426.3802965931.

The spelling of 77516005 in words is "seventy-seven million, five hundred sixteen thousand, five".