613274561 has 4 divisors (see below), whose sum is σ = 613330224. Its totient is φ = 613218900.

The previous prime is 613274549. The next prime is 613274587. The reversal of 613274561 is 165472316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 613274561 - 2¹⁰ = 613273537 is a prime.

It is a super-2 number, since 2×613274561² = 752211374339485442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613274591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5135 + ... + 35396.

It is an arithmetic number, because the mean of its divisors is an integer number (153332556).

Almost surely, 2^613274561 is an apocalyptic number.

It is an amenable number.

613274561 is a deficient number, since it is larger than the sum of its proper divisors (55663).

613274561 is a wasteful number, since it uses less digits than its factorization.

613274561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55662.

The product of its digits is 30240, while the sum is 35.

The square root of 613274561 is about 24764.3808927257. The cubic root of 613274561 is about 849.6074593475.

The spelling of 613274561 in words is "six hundred thirteen million, two hundred seventy-four thousand, five hundred sixty-one".