641807470 has 16 divisors (see below), whose sum is σ = 1156842720. Its totient is φ = 256369824.

The previous prime is 641807431. The next prime is 641807473. The reversal of 641807470 is 74708146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641807473) 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, 36450 + ... + 51109.

It is an arithmetic number, because the mean of its divisors is an integer number (72302670).

Almost surely, 2^641807470 is an apocalyptic number.

641807470 is a deficient number, since it is larger than the sum of its proper divisors (515035250).

641807470 is a wasteful number, since it uses less digits than its factorization.

641807470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88299.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 641807470 is about 25333.9193572570. The cubic root of 641807470 is about 862.5843793384.

The spelling of 641807470 in words is "six hundred forty-one million, eight hundred seven thousand, four hundred seventy".