77073631 has 4 divisors (see below), whose sum is σ = 81607392. Its totient is φ = 72539872.

The previous prime is 77073613. The next prime is 77073637. The reversal of 77073631 is 13637077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13637077 = 17 ⋅802181.

It is a cyclic number.

It is not a de Polignac number, because 77073631 - 2⁵ = 77073599 is a prime.

It is a super-2 number, since 2×77073631² = 11880689191048322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77073637) 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 3 ways as a sum of consecutive naturals, for example, 2266855 + ... + 2266888.

It is an arithmetic number, because the mean of its divisors is an integer number (20401848).

Almost surely, 2^77073631 is an apocalyptic number.

77073631 is a deficient number, since it is larger than the sum of its proper divisors (4533761).

77073631 is a wasteful number, since it uses less digits than its factorization.

77073631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533760.

The product of its (nonzero) digits is 18522, while the sum is 34.

The square root of 77073631 is about 8779.1589004870. The cubic root of 77073631 is about 425.5676493273.

The spelling of 77073631 in words is "seventy-seven million, seventy-three thousand, six hundred thirty-one".