613608431 has 4 divisors (see below), whose sum is σ = 619683864. Its totient is φ = 607533000.

The previous prime is 613608403. The next prime is 613608449. The reversal of 613608431 is 134806316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 613608431 - 2¹⁴ = 613592047 is a prime.

It is a super-2 number, since 2×613608431² = 753030613188563522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613608031) 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, 3037565 + ... + 3037766.

It is an arithmetic number, because the mean of its divisors is an integer number (154920966).

Almost surely, 2^613608431 is an apocalyptic number.

613608431 is a deficient number, since it is larger than the sum of its proper divisors (6075433).

613608431 is a wasteful number, since it uses less digits than its factorization.

613608431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6075432.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 613608431 is about 24771.1209072177. The cubic root of 613608431 is about 849.7616083486.

The spelling of 613608431 in words is "six hundred thirteen million, six hundred eight thousand, four hundred thirty-one".