1660756998 has 16 divisors (see below), whose sum is σ = 3465927936. Its totient is φ = 529516680.

The previous prime is 1660756973. The next prime is 1660757003. The reversal of 1660756998 is 8996570661.

It is a happy number.

It is a super-2 number, since 2×1660756998² = 5516227612811944008, which contains 22 as substring.

It is a Curzon number.

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, 6017098 + ... + 6017373.

It is an arithmetic number, because the mean of its divisors is an integer number (216620496).

Almost surely, 2^1660756998 is an apocalyptic number.

1660756998 is an abundant number, since it is smaller than the sum of its proper divisors (1805170938).

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

1660756998 is a wasteful number, since it uses less digits than its factorization.

1660756998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12034499.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The square root of 1660756998 is about 40752.3864086510. The cubic root of 1660756998 is about 1184.2281045442.

The spelling of 1660756998 in words is "one billion, six hundred sixty million, seven hundred fifty-six thousand, nine hundred ninety-eight".