641064120 has 32 divisors (see below), whose sum is σ = 1923192720. Its totient is φ = 170950400.

The previous prime is 641064113. The next prime is 641064133. The reversal of 641064120 is 21460146.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2670981 + ... + 2671220.

Almost surely, 2^641064120 is an apocalyptic number.

641064120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

641064120 is an abundant number, since it is smaller than the sum of its proper divisors (1282128600).

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

641064120 is a wasteful number, since it uses less digits than its factorization.

641064120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5342215 (or 5342211 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 641064120 is about 25319.2440645451. The cubic root of 641064120 is about 862.2512317631.

The spelling of 641064120 in words is "six hundred forty-one million, sixty-four thousand, one hundred twenty".