6401626 has 24 divisors (see below), whose sum is σ = 12065760. Its totient is φ = 2493480.

The previous prime is 6401621. The next prime is 6401669. The reversal of 6401626 is 6261046.

It is a happy number.

6401626 is a modest number, since divided by 1626 gives 64 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 6401626.

It is not an unprimeable number, because it can be changed into a prime (6401621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196 + ... + 3583.

It is an arithmetic number, because the mean of its divisors is an integer number (502740).

Almost surely, 2^6401626 is an apocalyptic number.

6401626 is a deficient number, since it is larger than the sum of its proper divisors (5664134).

6401626 is a wasteful number, since it uses less digits than its factorization.

6401626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810 (or 3799 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 6401626 is about 2530.1434741927. The cubic root of 6401626 is about 185.6792753953.

The spelling of 6401626 in words is "six million, four hundred one thousand, six hundred twenty-six".