641145753 has 16 divisors (see below), whose sum is σ = 970056960. Its totient is φ = 418335408.

The previous prime is 641145749. The next prime is 641145763. The reversal of 641145753 is 357541146.

641145753 is a `hidden beast` number, since 641 + 1 + 4 + 5 + 7 + 5 + 3 = 666.

It is not a de Polignac number, because 641145753 - 2² = 641145749 is a prime.

It is a super-2 number, since 2×641145753² = 822135753179874018, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (641145763) 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, 251350 + ... + 253887.

It is an arithmetic number, because the mean of its divisors is an integer number (60628560).

Almost surely, 2^641145753 is an apocalyptic number.

It is an amenable number.

641145753 is a deficient number, since it is larger than the sum of its proper divisors (328911207).

641145753 is a wasteful number, since it uses less digits than its factorization.

641145753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505293 (or 505287 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 641145753 is about 25320.8560874233. The cubic root of 641145753 is about 862.2878298532.

Adding to 641145753 its reverse (357541146), we get a palindrome (998686899).

The spelling of 641145753 in words is "six hundred forty-one million, one hundred forty-five thousand, seven hundred fifty-three".