641424375 has 30 divisors (see below), whose sum is σ = 1157766896. Its totient is φ = 342090000.

The previous prime is 641424359. The next prime is 641424389. The reversal of 641424375 is 573424146.

641424375 is a `hidden beast` number, since 641 + 4 + 2 + 4 + 3 + 7 + 5 = 666.

It is not a de Polignac number, because 641424375 - 2⁴ = 641424359 is a prime.

It is a super-2 number, since 2×641424375² = 822850457688281250, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 51391 + ... + 62640.

Almost surely, 2^641424375 is an apocalyptic number.

641424375 is a deficient number, since it is larger than the sum of its proper divisors (516342521).

641424375 is a wasteful number, since it uses less digits than its factorization.

641424375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114057 (or 114039 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 641424375 is about 25326.3573180195. The cubic root of 641424375 is about 862.4127195864.

The spelling of 641424375 in words is "six hundred forty-one million, four hundred twenty-four thousand, three hundred seventy-five".