6405960626 has 16 divisors (see below), whose sum is σ = 10704922200. Its totient is φ = 2854645248.

The previous prime is 6405960623. The next prime is 6405960641. The reversal of 6405960626 is 6260695046.

It can be written as a sum of positive squares in 4 ways, for example, as 2867495401 + 3538465225 = 53549^2 + 59485^2 .

It is not an unprimeable number, because it can be changed into a prime (6405960623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4247231 + ... + 4248738.

Almost surely, 2^6405960626 is an apocalyptic number.

6405960626 is a deficient number, since it is larger than the sum of its proper divisors (4298961574).

6405960626 is a wasteful number, since it uses less digits than its factorization.

6405960626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8496013.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 6405960626 is about 80037.2452424495. The cubic root of 6405960626 is about 1857.2117457450.

The spelling of 6405960626 in words is "six billion, four hundred five million, nine hundred sixty thousand, six hundred twenty-six".