1661230598 has 8 divisors (see below), whose sum is σ = 2499808008. Its totient is φ = 827961264.

The previous prime is 1661230589. The next prime is 1661230603. The reversal of 1661230598 is 8950321661.

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

It is a congruent number.

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, 1326236 + ... + 1327487.

It is an arithmetic number, because the mean of its divisors is an integer number (312476001).

Almost surely, 2^1661230598 is an apocalyptic number.

1661230598 is a deficient number, since it is larger than the sum of its proper divisors (838577410).

1661230598 is a wasteful number, since it uses less digits than its factorization.

1661230598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654038.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1661230598 is about 40758.1966971062. The cubic root of 1661230598 is about 1184.3406630795.

The spelling of 1661230598 in words is "one billion, six hundred sixty-one million, two hundred thirty thousand, five hundred ninety-eight".