641495233 has 8 divisors (see below), whose sum is σ = 693509120. Its totient is φ = 591306480.

The previous prime is 641495219. The next prime is 641495243. The reversal of 641495233 is 332594146.

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

It is a cyclic number.

It is not a de Polignac number, because 641495233 - 2⁵ = 641495201 is a prime.

It is a super-2 number, since 2×641495233² = 823032267923448578, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 641495192 and 641495201.

It is not an unprimeable number, because it can be changed into a prime (641495243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455553 + ... + 456958.

It is an arithmetic number, because the mean of its divisors is an integer number (86688640).

Almost surely, 2^641495233 is an apocalyptic number.

It is an amenable number.

641495233 is a deficient number, since it is larger than the sum of its proper divisors (52013887).

641495233 is a wasteful number, since it uses less digits than its factorization.

641495233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912567.

The product of its digits is 77760, while the sum is 37.

The square root of 641495233 is about 25327.7561777588. The cubic root of 641495233 is about 862.4444752606. Note that the first 4 decimals are identical.

The spelling of 641495233 in words is "six hundred forty-one million, four hundred ninety-five thousand, two hundred thirty-three".