613309272 has 64 divisors (see below), whose sum is σ = 1640308320. Its totient is φ = 190414848.

The previous prime is 613309271. The next prime is 613309309. The reversal of 613309272 is 272903316.

It is a happy number.

It is a super-2 number, since 2×613309272² = 752296526242339968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613309271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31828 + ... + 47324.

Almost surely, 2^613309272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 613309272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820154160).

613309272 is an abundant number, since it is smaller than the sum of its proper divisors (1026999048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613309272 is a wasteful number, since it uses less digits than its factorization.

613309272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15620 (or 15616 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 613309272 is about 24765.0817079209. The cubic root of 613309272 is about 849.6234881487.

The spelling of 613309272 in words is "six hundred thirteen million, three hundred nine thousand, two hundred seventy-two".