641161662 has 16 divisors (see below), whose sum is σ = 1338076800. Its totient is φ = 204428312.

The previous prime is 641161657. The next prime is 641161699. The reversal of 641161662 is 266161146.

It is a happy number.

It is a super-2 number, since 2×641161662² = 822176553637204488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2322912 + ... + 2323187.

It is an arithmetic number, because the mean of its divisors is an integer number (83629800).

Almost surely, 2^641161662 is an apocalyptic number.

641161662 is an abundant number, since it is smaller than the sum of its proper divisors (696915138).

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

641161662 is a wasteful number, since it uses less digits than its factorization.

641161662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4646127.

The product of its digits is 10368, while the sum is 33.

The square root of 641161662 is about 25321.1702336207. The cubic root of 641161662 is about 862.2949618891.

The spelling of 641161662 in words is "six hundred forty-one million, one hundred sixty-one thousand, six hundred sixty-two".