654655881 has 8 divisors (see below), whose sum is σ = 952226784. Its totient is φ = 396761120.

The previous prime is 654655867. The next prime is 654655901. The reversal of 654655881 is 188556456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 654655881 - 2⁶ = 654655817 is a prime.

It is a super-2 number, since 2×654655881² = 857148645055772322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 654655881.

It is not an unprimeable number, because it can be changed into a prime (654655381) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9918996 + ... + 9919061.

It is an arithmetic number, because the mean of its divisors is an integer number (119028348).

Almost surely, 2^654655881 is an apocalyptic number.

It is an amenable number.

654655881 is a deficient number, since it is larger than the sum of its proper divisors (297570903).

654655881 is a wasteful number, since it uses less digits than its factorization.

654655881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19838071.

The product of its digits is 1152000, while the sum is 48.

The square root of 654655881 is about 25586.2439799201. The cubic root of 654655881 is about 868.3024462431.

The spelling of 654655881 in words is "six hundred fifty-four million, six hundred fifty-five thousand, eight hundred eighty-one".