77372065 has 8 divisors (see below), whose sum is σ = 92933928. Its totient is φ = 61839360.

The previous prime is 77372017. The next prime is 77372081. The reversal of 77372065 is 56027377.

It can be written as a sum of positive squares in 4 ways, for example, as 35808256 + 41563809 = 5984^2 + 6447^2 .

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

It is not a de Polignac number, because 77372065 - 2⁷ = 77371937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946 + ... + 12475.

It is an arithmetic number, because the mean of its divisors is an integer number (11616741).

Almost surely, 2^77372065 is an apocalyptic number.

It is an amenable number.

77372065 is a deficient number, since it is larger than the sum of its proper divisors (15561863).

77372065 is a wasteful number, since it uses less digits than its factorization.

77372065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14579.

The product of its (nonzero) digits is 61740, while the sum is 37.

The square root of 77372065 is about 8796.1392099034. The cubic root of 77372065 is about 426.1162169052.

The spelling of 77372065 in words is "seventy-seven million, three hundred seventy-two thousand, sixty-five".