641375 has 16 divisors (see below), whose sum is σ = 916032. Its totient is φ = 439200.

The previous prime is 641371. The next prime is 641387. The reversal of 641375 is 573146.

It is not a de Polignac number, because 641375 - 2² = 641371 is a prime.

It is a super-2 number, since 2×641375² = 822723781250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641371) 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, 509 + ... + 1241.

It is an arithmetic number, because the mean of its divisors is an integer number (57252).

2⁶⁴¹³⁷⁵ is an apocalyptic number.

641375 is a deficient number, since it is larger than the sum of its proper divisors (274657).

641375 is an equidigital number, since it uses as much as digits as its factorization.

641375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 745 counting only the distinct ones).

The product of its digits is 2520, while the sum is 26.

The square root of 641375 is about 800.8589139168. The cubic root of 641375 is about 86.2390590337.

The spelling of 641375 in words is "six hundred forty-one thousand, three hundred seventy-five".