6431657 has 4 divisors (see below), whose sum is σ = 6537156. Its totient is φ = 6326160.

The previous prime is 6431653. The next prime is 6431681. The reversal of 6431657 is 7561346.

6431657 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 226576 + 6205081 = 476^2 + 2491^2 .

It is a cyclic number.

It is not a de Polignac number, because 6431657 - 2² = 6431653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6431653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52658 + ... + 52779.

It is an arithmetic number, because the mean of its divisors is an integer number (1634289).

Almost surely, 2^6431657 is an apocalyptic number.

It is an amenable number.

6431657 is a deficient number, since it is larger than the sum of its proper divisors (105499).

6431657 is a wasteful number, since it uses less digits than its factorization.

6431657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105498.

The product of its digits is 15120, while the sum is 32.

The square root of 6431657 is about 2536.0711740801. The cubic root of 6431657 is about 185.9691724452.

The spelling of 6431657 in words is "six million, four hundred thirty-one thousand, six hundred fifty-seven".