641090253 has 8 divisors (see below), whose sum is σ = 856170400. Its totient is φ = 426701808.

The previous prime is 641090251. The next prime is 641090273. The reversal of 641090253 is 352090146.

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

It is not a de Polignac number, because 641090253 - 2¹ = 641090251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 641090253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641090251) 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, 170758 + ... + 174471.

It is an arithmetic number, because the mean of its divisors is an integer number (107021300).

Almost surely, 2^641090253 is an apocalyptic number.

It is an amenable number.

641090253 is a deficient number, since it is larger than the sum of its proper divisors (215080147).

641090253 is a wasteful number, since it uses less digits than its factorization.

641090253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345851.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 641090253 is about 25319.7601291955. The cubic root of 641090253 is about 862.2629481705.

The spelling of 641090253 in words is "six hundred forty-one million, ninety thousand, two hundred fifty-three".