617431 has 4 divisors (see below), whose sum is σ = 619200. Its totient is φ = 615664.

The previous prime is 617429. The next prime is 617447. The reversal of 617431 is 134716.

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 617431 - 2¹ = 617429 is a prime.

It is a super-2 number, since 2×617431² = 762442079522, 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 (617401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166 + ... + 1123.

It is an arithmetic number, because the mean of its divisors is an integer number (154800).

2⁶¹⁷⁴³¹ is an apocalyptic number.

617431 is a deficient number, since it is larger than the sum of its proper divisors (1769).

617431 is a wasteful number, since it uses less digits than its factorization.

617431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768.

The product of its digits is 504, while the sum is 22.

The square root of 617431 is about 785.7677773999. The cubic root of 617431 is about 85.1522530711.

The spelling of 617431 in words is "six hundred seventeen thousand, four hundred thirty-one".