655612613 has 8 divisors (see below), whose sum is σ = 696820800. Its totient is φ = 615074688.

The previous prime is 655612577. The next prime is 655612619. The reversal of 655612613 is 316216556.

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

It is not a de Polignac number, because 655612613 - 2¹² = 655608517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655612619) 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, 165548 + ... + 169461.

It is an arithmetic number, because the mean of its divisors is an integer number (87102600).

Almost surely, 2^655612613 is an apocalyptic number.

It is an amenable number.

655612613 is a deficient number, since it is larger than the sum of its proper divisors (41208187).

655612613 is a wasteful number, since it uses less digits than its factorization.

655612613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335131.

The product of its digits is 32400, while the sum is 35.

The square root of 655612613 is about 25604.9333723015. The cubic root of 655612613 is about 868.7252273322.

The spelling of 655612613 in words is "six hundred fifty-five million, six hundred twelve thousand, six hundred thirteen".