577872981 has 32 divisors (see below), whose sum is σ = 982298880. Its totient is φ = 328900608.

The previous prime is 577872961. The next prime is 577873007. The reversal of 577872981 is 189278775.

It is a happy number.

It is not a de Polignac number, because 577872981 - 2⁵ = 577872949 is a prime.

It is a super-2 number, since 2×577872981² = 667874364339652722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (577872961) 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 31 ways as a sum of consecutive naturals, for example, 42625 + ... + 54521.

It is an arithmetic number, because the mean of its divisors is an integer number (30696840).

Almost surely, 2^577872981 is an apocalyptic number.

It is an amenable number.

577872981 is a deficient number, since it is larger than the sum of its proper divisors (404425899).

577872981 is a wasteful number, since it uses less digits than its factorization.

577872981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12170 (or 12164 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 54.

The square root of 577872981 is about 24038.9887682490. The cubic root of 577872981 is about 832.9343954843.

The spelling of 577872981 in words is "five hundred seventy-seven million, eight hundred seventy-two thousand, nine hundred eighty-one".