6400975 has 24 divisors (see below), whose sum is σ = 9205760. Its totient is φ = 4324320.

The previous prime is 6400957. The next prime is 6400981. The reversal of 6400975 is 5790046.

It is not a de Polignac number, because 6400975 - 2¹³ = 6392783 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13594 + ... + 14056.

Almost surely, 2^6400975 is an apocalyptic number.

6400975 is a deficient number, since it is larger than the sum of its proper divisors (2804785).

6400975 is a wasteful number, since it uses less digits than its factorization.

6400975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 6400975 is about 2530.0148220910. The cubic root of 6400975 is about 185.6729810931.

The spelling of 6400975 in words is "six million, four hundred thousand, nine hundred seventy-five".