6631401 has 16 divisors (see below), whose sum is σ = 10454400. Its totient is φ = 3658368.

The previous prime is 6631379. The next prime is 6631409. The reversal of 6631401 is 1041366.

It is not a de Polignac number, because 6631401 - 2⁵ = 6631369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (6631409) 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, 4836 + ... + 6053.

It is an arithmetic number, because the mean of its divisors is an integer number (653400).

Almost surely, 2^6631401 is an apocalyptic number.

It is an amenable number.

6631401 is a deficient number, since it is larger than the sum of its proper divisors (3822999).

6631401 is a wasteful number, since it uses less digits than its factorization.

6631401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10928.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 6631401 is about 2575.1506752033. The cubic root of 6631401 is about 187.8747562534.

Adding to 6631401 its reverse (1041366), we get a palindrome (7672767).

The spelling of 6631401 in words is "six million, six hundred thirty-one thousand, four hundred one".