6401007 has 6 divisors (see below), whose sum is σ = 9245912. Its totient is φ = 4267332.

The previous prime is 6400987. The next prime is 6401011. The reversal of 6401007 is 7001046.

It is not a de Polignac number, because 6401007 - 2¹² = 6396911 is a prime.

It is a super-2 number, since 2×6401007² = 81945781228098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402007) 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, 355603 + ... + 355620.

Almost surely, 2^6401007 is an apocalyptic number.

6401007 is a deficient number, since it is larger than the sum of its proper divisors (2844905).

6401007 is a wasteful number, since it uses less digits than its factorization.

6401007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711229 (or 711226 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 6401007 is about 2530.0211461567. The cubic root of 6401007 is about 185.6732905004.

It can be divided in two parts, 6 and 401007, that multiplied together give a palindrome (2406042).

The spelling of 6401007 in words is "six million, four hundred one thousand, seven".