77500065 has 8 divisors (see below), whose sum is σ = 124000128. Its totient is φ = 41333360.

The previous prime is 77500063. The next prime is 77500079. The reversal of 77500065 is 56000577.

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

It is not a de Polignac number, because 77500065 - 2¹ = 77500063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77500063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2583321 + ... + 2583350.

It is an arithmetic number, because the mean of its divisors is an integer number (15500016).

Almost surely, 2^77500065 is an apocalyptic number.

It is an amenable number.

77500065 is a deficient number, since it is larger than the sum of its proper divisors (46500063).

77500065 is a wasteful number, since it uses less digits than its factorization.

77500065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166679.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 77500065 is about 8803.4121225807. The cubic root of 77500065 is about 426.3510683589.

The spelling of 77500065 in words is "seventy-seven million, five hundred thousand, sixty-five".