641374953 has 8 divisors (see below), whose sum is σ = 861409248. Its totient is φ = 424461984.

The previous prime is 641374939. The next prime is 641374973. The reversal of 641374953 is 359473146.

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

It is not a de Polignac number, because 641374953 - 2⁹ = 641374441 is a prime.

It is a super-2 number, since 2×641374953² = 822723660671504418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641374973) 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, 779851 + ... + 780672.

It is an arithmetic number, because the mean of its divisors is an integer number (107676156).

Almost surely, 2^641374953 is an apocalyptic number.

It is an amenable number.

641374953 is a deficient number, since it is larger than the sum of its proper divisors (220034295).

641374953 is a wasteful number, since it uses less digits than its factorization.

641374953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560663.

The product of its digits is 272160, while the sum is 42.

The square root of 641374953 is about 25325.3815963353. The cubic root of 641374953 is about 862.3905692712.

The spelling of 641374953 in words is "six hundred forty-one million, three hundred seventy-four thousand, nine hundred fifty-three".