621626126 has 12 divisors (see below), whose sum is σ = 1024912896. Its totient is φ = 282557220.

The previous prime is 621626123. The next prime is 621626141.

621626126 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 621626092 and 621626101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621626123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1284110 + ... + 1284593.

It is an arithmetic number, because the mean of its divisors is an integer number (85409408).

Almost surely, 2^621626126 is an apocalyptic number.

621626126 is a deficient number, since it is larger than the sum of its proper divisors (403286770).

621626126 is a wasteful number, since it uses less digits than its factorization.

621626126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568727 (or 2568716 counting only the distinct ones).

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

The square root of 621626126 is about 24932.4312091701. The cubic root of 621626126 is about 853.4467317900.

The spelling of 621626126 in words is "six hundred twenty-one million, six hundred twenty-six thousand, one hundred twenty-six".