6401580 has 24 divisors (see below), whose sum is σ = 17924592. Its totient is φ = 1707072.

The previous prime is 6401579. The next prime is 6401587. The reversal of 6401580 is 851046.

It is a self number, because there is not a number n which added to its sum of digits gives 6401580.

It is not an unprimeable number, because it can be changed into a prime (6401587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53287 + ... + 53406.

It is an arithmetic number, because the mean of its divisors is an integer number (746858).

Almost surely, 2^6401580 is an apocalyptic number.

6401580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6401580 is an abundant number, since it is smaller than the sum of its proper divisors (11523012).

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

6401580 is a wasteful number, since it uses less digits than its factorization.

6401580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106705 (or 106703 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 6401580 is about 2530.1343837828. The cubic root of 6401580 is about 185.6788306506.

The spelling of 6401580 in words is "six million, four hundred one thousand, five hundred eighty".