626894394 has 64 divisors (see below), whose sum is σ = 1508696064. Its totient is φ = 169779456.

The previous prime is 626894357. The next prime is 626894423. The reversal of 626894394 is 493498626.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106287 + ... + 112029.

It is an arithmetic number, because the mean of its divisors is an integer number (23573376).

Almost surely, 2^626894394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 626894394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754348032).

626894394 is an abundant number, since it is smaller than the sum of its proper divisors (881801670).

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

626894394 is a wasteful number, since it uses less digits than its factorization.

626894394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5891.

The product of its digits is 2239488, while the sum is 51.

The square root of 626894394 is about 25037.8592135989. The cubic root of 626894394 is about 855.8509335515.

The spelling of 626894394 in words is "six hundred twenty-six million, eight hundred ninety-four thousand, three hundred ninety-four".