101666490 has 32 divisors (see below), whose sum is σ = 245090880. Its totient is φ = 26989824.

The previous prime is 101666483. The next prime is 101666501. The reversal of 101666490 is 94666101.

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, 655 + ... + 14274.

It is an arithmetic number, because the mean of its divisors is an integer number (7659090).

Almost surely, 2^101666490 is an apocalyptic number.

101666490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101666490 is an abundant number, since it is smaller than the sum of its proper divisors (143424390).

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

101666490 is a wasteful number, since it uses less digits than its factorization.

101666490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15166.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 101666490 is about 10082.9802142025. The cubic root of 101666490 is about 466.7230787814.

The spelling of 101666490 in words is "one hundred one million, six hundred sixty-six thousand, four hundred ninety".