1660589400698 has 8 divisors (see below), whose sum is σ = 2621983264320. Its totient is φ = 786594979260.

The previous prime is 1660589400661. The next prime is 1660589400731. The reversal of 1660589400698 is 8960049850661.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1660589400698.

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, 21849860498 + ... + 21849860573.

It is an arithmetic number, because the mean of its divisors is an integer number (327747908040).

Almost surely, 2^{1660589400698} is an apocalyptic number.

1660589400698 is a deficient number, since it is larger than the sum of its proper divisors (961393863622).

1660589400698 is a wasteful number, since it uses less digits than its factorization.

1660589400698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43699721092.

The product of its (nonzero) digits is 22394880, while the sum is 62.

The spelling of 1660589400698 in words is "one trillion, six hundred sixty billion, five hundred eighty-nine million, four hundred thousand, six hundred ninety-eight".