626626990 has 32 divisors (see below), whose sum is σ = 1232607456. Its totient is φ = 227468160.

The previous prime is 626626981. The next prime is 626626991. The reversal of 626626990 is 99626626.

626626990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×626626990² = 785322769192920200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 626626990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626626991) 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, 62784 + ... + 72076.

It is an arithmetic number, because the mean of its divisors is an integer number (38518983).

Almost surely, 2^626626990 is an apocalyptic number.

626626990 is a deficient number, since it is larger than the sum of its proper divisors (605980466).

626626990 is a wasteful number, since it uses less digits than its factorization.

626626990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9924.

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 626626990 is about 25032.5186507471. The cubic root of 626626990 is about 855.7292275071.

The spelling of 626626990 in words is "six hundred twenty-six million, six hundred twenty-six thousand, nine hundred ninety".