661441692 has 48 divisors (see below), whose sum is σ = 1563091712. Its totient is φ = 217676160.

The previous prime is 661441667. The next prime is 661441709. The reversal of 661441692 is 296144166.

It is a super-2 number, since 2×661441692² = 875010223831645728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 661441692.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564267 + ... + 565437.

Almost surely, 2^661441692 is an apocalyptic number.

It is an amenable number.

661441692 is an abundant number, since it is smaller than the sum of its proper divisors (901650020).

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

661441692 is a wasteful number, since it uses less digits than its factorization.

661441692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738 (or 1736 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 661441692 is about 25718.5087437044. The cubic root of 661441692 is about 871.2922584752.

The spelling of 661441692 in words is "six hundred sixty-one million, four hundred forty-one thousand, six hundred ninety-two".