641417523 has 8 divisors (see below), whose sum is σ = 900235200. Its totient is φ = 405105768.

The previous prime is 641417521. The next prime is 641417573. The reversal of 641417523 is 325714146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 641417523 - 2¹ = 641417521 is a prime.

It is a super-2 number, since 2×641417523² = 822832877622911058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641417521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5626413 + ... + 5626526.

It is an arithmetic number, because the mean of its divisors is an integer number (112529400).

Almost surely, 2^641417523 is an apocalyptic number.

641417523 is a deficient number, since it is larger than the sum of its proper divisors (258817677).

641417523 is a wasteful number, since it uses less digits than its factorization.

641417523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11252961.

The product of its digits is 20160, while the sum is 33.

The square root of 641417523 is about 25326.2220435658. Note that the first 3 decimals coincide. The cubic root of 641417523 is about 862.4096486746.

The spelling of 641417523 in words is "six hundred forty-one million, four hundred seventeen thousand, five hundred twenty-three".