6401604 has 24 divisors (see below), whose sum is σ = 16295328. Its totient is φ = 1939840.

The previous prime is 6401587. The next prime is 6401609. The reversal of 6401604 is 4061046.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6401609) 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, 24117 + ... + 24380.

It is an arithmetic number, because the mean of its divisors is an integer number (678972).

Almost surely, 2^6401604 is an apocalyptic number.

It is an amenable number.

6401604 is an abundant number, since it is smaller than the sum of its proper divisors (9893724).

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

6401604 is a wasteful number, since it uses less digits than its factorization.

6401604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48515 (or 48513 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 6401604 is about 2530.1391266094. The cubic root of 6401604 is about 185.6790626916.

The spelling of 6401604 in words is "six million, four hundred one thousand, six hundred four".