77013973 has 4 divisors (see below), whose sum is σ = 81067360. Its totient is φ = 72960588.

The previous prime is 77013953. The next prime is 77013977. The reversal of 77013973 is 37931077.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77013973 - 2⁵ = 77013941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77013977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2026665 + ... + 2026702.

It is an arithmetic number, because the mean of its divisors is an integer number (20266840).

Almost surely, 2^77013973 is an apocalyptic number.

It is an amenable number.

77013973 is a deficient number, since it is larger than the sum of its proper divisors (4053387).

77013973 is a wasteful number, since it uses less digits than its factorization.

77013973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053386.

The product of its (nonzero) digits is 27783, while the sum is 37.

The square root of 77013973 is about 8775.7605368424. The cubic root of 77013973 is about 425.4578189920.

The spelling of 77013973 in words is "seventy-seven million, thirteen thousand, nine hundred seventy-three".