6403172 has 6 divisors (see below), whose sum is σ = 11205558. Its totient is φ = 3201584.

The previous prime is 6403157. The next prime is 6403181. The reversal of 6403172 is 2713046.

It can be written as a sum of positive squares in only one way, i.e., 5354596 + 1048576 = 2314^2 + 1024^2 .

It is a super-3 number, since 3×6403172³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800393 + ... + 800400.

It is an arithmetic number, because the mean of its divisors is an integer number (1867593).

Almost surely, 2^6403172 is an apocalyptic number.

It is an amenable number.

6403172 is a deficient number, since it is larger than the sum of its proper divisors (4802386).

6403172 is a wasteful number, since it uses less digits than its factorization.

6403172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600797 (or 1600795 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 6403172 is about 2530.4489720206. The cubic root of 6403172 is about 185.6942214447.

The spelling of 6403172 in words is "six million, four hundred three thousand, one hundred seventy-two".