626431 has 4 divisors (see below), whose sum is σ = 674632. Its totient is φ = 578232.

The previous prime is 626393. The next prime is 626443. The reversal of 626431 is 134626.

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 626431 - 2¹⁷ = 495359 is a prime.

It is a super-2 number, since 2×626431² = 784831595522, 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 (621431) 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, 24081 + ... + 24106.

It is an arithmetic number, because the mean of its divisors is an integer number (168658).

2⁶²⁶⁴³¹ is an apocalyptic number.

626431 is a deficient number, since it is larger than the sum of its proper divisors (48201).

626431 is a wasteful number, since it uses less digits than its factorization.

626431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48200.

The product of its digits is 864, while the sum is 22.

The square root of 626431 is about 791.4739414535. The cubic root of 626431 is about 85.5640002784.

The spelling of 626431 in words is "six hundred twenty-six thousand, four hundred thirty-one".