641475 has 18 divisors (see below), whose sum is σ = 1149356. Its totient is φ = 342000.

The previous prime is 641471. The next prime is 641479. The reversal of 641475 is 574146.

641475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (641471) and next prime (641479).

It is not a de Polignac number, because 641475 - 2² = 641471 is a prime.

It is a super-2 number, since 2×641475² = 822980351250, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (641471) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1201 + ... + 1650.

2⁶⁴¹⁴⁷⁵ is an apocalyptic number.

641475 is a deficient number, since it is larger than the sum of its proper divisors (507881).

641475 is a wasteful number, since it uses less digits than its factorization.

641475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867 (or 2859 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 641475 is about 800.9213444527. The cubic root of 641475 is about 86.2435407891.

The spelling of 641475 in words is "six hundred forty-one thousand, four hundred seventy-five".