577642117 has 4 divisors (see below), whose sum is σ = 622076140. Its totient is φ = 533208096.

The previous prime is 577642111. The next prime is 577642139. The reversal of 577642117 is 711246775.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 192265956 + 385376161 = 13866^2 + 19631^2 .

It is a cyclic number.

It is not a de Polignac number, because 577642117 - 2¹⁵ = 577609349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 577642117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (577642111) 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, 22216992 + ... + 22217017.

It is an arithmetic number, because the mean of its divisors is an integer number (155519035).

Almost surely, 2^577642117 is an apocalyptic number.

It is an amenable number.

577642117 is a deficient number, since it is larger than the sum of its proper divisors (44434023).

577642117 is a wasteful number, since it uses less digits than its factorization.

577642117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44434022.

The product of its digits is 82320, while the sum is 40.

The square root of 577642117 is about 24034.1864226772. The cubic root of 577642117 is about 832.8234598140.

The spelling of 577642117 in words is "five hundred seventy-seven million, six hundred forty-two thousand, one hundred seventeen".