654642613 has 8 divisors (see below), whose sum is σ = 710057880. Its totient is φ = 601105920.

The previous prime is 654642577. The next prime is 654642617. The reversal of 654642613 is 316246456.

It can be written as a sum of positive squares in 4 ways, for example, as 24532209 + 630110404 = 4953^2 + 25102^2 .

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

It is not a de Polignac number, because 654642613 - 2⁹ = 654642101 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 (654642617) 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, 468918 + ... + 470311.

It is an arithmetic number, because the mean of its divisors is an integer number (88757235).

Almost surely, 2^654642613 is an apocalyptic number.

It is an amenable number.

654642613 is a deficient number, since it is larger than the sum of its proper divisors (55415267).

654642613 is a wasteful number, since it uses less digits than its factorization.

654642613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939287.

The product of its digits is 103680, while the sum is 37.

The square root of 654642613 is about 25585.9846986588. The cubic root of 654642613 is about 868.2965802021.

The spelling of 654642613 in words is "six hundred fifty-four million, six hundred forty-two thousand, six hundred thirteen".