641516466 has 8 divisors (see below), whose sum is σ = 1283032944. Its totient is φ = 213838820.

The previous prime is 641516459. The next prime is 641516479. The reversal of 641516466 is 664615146.

It is a happy number.

641516466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

641516466 is an admirable number.

It is a super-2 number, since 2×641516466² = 823086752298258312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53459700 + ... + 53459711.

It is an arithmetic number, because the mean of its divisors is an integer number (160379118).

Almost surely, 2^641516466 is an apocalyptic number.

641516466 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

641516466 is a wasteful number, since it uses less digits than its factorization.

641516466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106919416.

The product of its digits is 103680, while the sum is 39.

The square root of 641516466 is about 25328.1753389383. The cubic root of 641516466 is about 862.4539905724.

The spelling of 641516466 in words is "six hundred forty-one million, five hundred sixteen thousand, four hundred sixty-six".