664411260 has 48 divisors (see below), whose sum is σ = 1865104416. Its totient is φ = 176723712.

The previous prime is 664411249. The next prime is 664411261. The reversal of 664411260 is 62114466.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664411261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9874 + ... + 37766.

It is an arithmetic number, because the mean of its divisors is an integer number (38856342).

Almost surely, 2^664411260 is an apocalyptic number.

664411260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

664411260 is an abundant number, since it is smaller than the sum of its proper divisors (1200693156).

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

664411260 is a wasteful number, since it uses less digits than its factorization.

664411260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28302 (or 28300 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 664411260 is about 25776.1762098260. The cubic root of 664411260 is about 872.5942120963.

The spelling of 664411260 in words is "six hundred sixty-four million, four hundred eleven thousand, two hundred sixty".