77893965 has 24 divisors (see below), whose sum is σ = 135358080. Its totient is φ = 41438304.

The previous prime is 77893943. The next prime is 77894021. The reversal of 77893965 is 56939877.

It is not a de Polignac number, because 77893965 - 2¹⁵ = 77861197 is a prime.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 17784 + ... + 21726.

It is an arithmetic number, because the mean of its divisors is an integer number (5639920).

Almost surely, 2^77893965 is an apocalyptic number.

It is an amenable number.

77893965 is a deficient number, since it is larger than the sum of its proper divisors (57464115).

77893965 is a wasteful number, since it uses less digits than its factorization.

77893965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4393 (or 4390 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 77893965 is about 8825.7557750031. The cubic root of 77893965 is about 427.0721686763.

The spelling of 77893965 in words is "seventy-seven million, eight hundred ninety-three thousand, nine hundred sixty-five".