6402657 has 8 divisors (see below), whose sum is σ = 8735584. Its totient is φ = 4169088.

The previous prime is 6402653. The next prime is 6402661. The reversal of 6402657 is 7562046.

It is an interprime number because it is at equal distance from previous prime (6402653) and next prime (6402661).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6402657 - 2² = 6402653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6402653) 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, 24688 + ... + 24945.

It is an arithmetic number, because the mean of its divisors is an integer number (1091948).

Almost surely, 2^6402657 is an apocalyptic number.

It is an amenable number.

6402657 is a deficient number, since it is larger than the sum of its proper divisors (2332927).

6402657 is a wasteful number, since it uses less digits than its factorization.

6402657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49679.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 6402657 is about 2530.3472093766. The cubic root of 6402657 is about 185.6892429180.

The spelling of 6402657 in words is "six million, four hundred two thousand, six hundred fifty-seven".