641237275 has 18 divisors (see below), whose sum is σ = 924953820. Its totient is φ = 439704720.

The previous prime is 641237231. The next prime is 641237291. The reversal of 641237275 is 572732146.

It is a happy number.

It is not a de Polignac number, because 641237275 - 2⁹ = 641236763 is a prime.

It is a super-2 number, since 2×641237275² = 822370485698851250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 260505 + ... + 262954.

Almost surely, 2^641237275 is an apocalyptic number.

641237275 is a deficient number, since it is larger than the sum of its proper divisors (283716545).

641237275 is a wasteful number, since it uses less digits than its factorization.

641237275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523483 (or 523471 counting only the distinct ones).

The product of its digits is 70560, while the sum is 37.

The square root of 641237275 is about 25322.6632683057. The cubic root of 641237275 is about 862.3288577326.

The spelling of 641237275 in words is "six hundred forty-one million, two hundred thirty-seven thousand, two hundred seventy-five".