6401560 has 32 divisors (see below), whose sum is σ = 15714000. Its totient is φ = 2327680.

The previous prime is 6401557. The next prime is 6401569. The reversal of 6401560 is 651046.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401569) 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, 6835 + ... + 7714.

Almost surely, 2^6401560 is an apocalyptic number.

It is an amenable number.

6401560 is an abundant number, since it is smaller than the sum of its proper divisors (9312440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6401560 is a wasteful number, since it uses less digits than its factorization.

6401560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14571 (or 14567 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 6401560 is about 2530.1304314205. The cubic root of 6401560 is about 185.6786372827.

The spelling of 6401560 in words is "six million, four hundred one thousand, five hundred sixty".