641466490 has 32 divisors (see below), whose sum is σ = 1332414720. Its totient is φ = 217793664.

The previous prime is 641466439. The next prime is 641466493. The reversal of 641466490 is 94664146.

It is a super-2 number, since 2×641466490² = 822958515585840200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641466493) 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, 37275 + ... + 51694.

It is an arithmetic number, because the mean of its divisors is an integer number (41637960).

Almost surely, 2^641466490 is an apocalyptic number.

641466490 is an abundant number, since it is smaller than the sum of its proper divisors (690948230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641466490 is a wasteful number, since it uses less digits than its factorization.

641466490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89086.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 641466490 is about 25327.1887504318. The cubic root of 641466490 is about 862.4315940987.

The spelling of 641466490 in words is "six hundred forty-one million, four hundred sixty-six thousand, four hundred ninety".