101666630 has 64 divisors (see below), whose sum is σ = 210651840. Its totient is φ = 34996224.

The previous prime is 101666629. The next prime is 101666651. The reversal of 101666630 is 36666101.

It is a super-2 number, since 2×101666630² = 20672207311113800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101666593 and 101666602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395462 + ... + 395718.

It is an arithmetic number, because the mean of its divisors is an integer number (3291435).

Almost surely, 2^101666630 is an apocalyptic number.

101666630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101666630 is an abundant number, since it is smaller than the sum of its proper divisors (108985210).

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

101666630 is a wasteful number, since it uses less digits than its factorization.

101666630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 101666630 is about 10082.9871565920. The cubic root of 101666630 is about 466.7232930152.

The spelling of 101666630 in words is "one hundred one million, six hundred sixty-six thousand, six hundred thirty".