101990568 has 32 divisors (see below), whose sum is σ = 255432960. Its totient is φ = 33936000.

The previous prime is 101990557. The next prime is 101990591. The reversal of 101990568 is 865099101.

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, 11068 + ... + 18068.

It is an arithmetic number, because the mean of its divisors is an integer number (7982280).

Almost surely, 2^101990568 is an apocalyptic number.

It is an amenable number.

101990568 is an abundant number, since it is smaller than the sum of its proper divisors (153442392).

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

101990568 is a wasteful number, since it uses less digits than its factorization.

101990568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7617 (or 7613 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 101990568 is about 10099.0379739854. The cubic root of 101990568 is about 467.2184706254.

The spelling of 101990568 in words is "one hundred one million, nine hundred ninety thousand, five hundred sixty-eight".