655546431 has 8 divisors (see below), whose sum is σ = 874209024. Its totient is φ = 436957400.

The previous prime is 655546399. The next prime is 655546439. The reversal of 655546431 is 134645556.

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 655546431 - 2⁵ = 655546399 is a prime.

It is a super-2 number, since 2×655546431² = 859482246393675522, 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 655546431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655546439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7690 + ... + 37016.

It is an arithmetic number, because the mean of its divisors is an integer number (109276128).

Almost surely, 2^655546431 is an apocalyptic number.

655546431 is a deficient number, since it is larger than the sum of its proper divisors (218662593).

655546431 is a wasteful number, since it uses less digits than its factorization.

655546431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36781.

The product of its digits is 216000, while the sum is 39.

The square root of 655546431 is about 25603.6409715493. The cubic root of 655546431 is about 868.6959946692.

The spelling of 655546431 in words is "six hundred fifty-five million, five hundred forty-six thousand, four hundred thirty-one".