101666448 has 160 divisors (see below), whose sum is σ = 322340480. Its totient is φ = 30481920.

The previous prime is 101666441. The next prime is 101666483. The reversal of 101666448 is 844666101.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (101666441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241278 + ... + 241698.

It is an arithmetic number, because the mean of its divisors is an integer number (2014628).

Almost surely, 2^101666448 is an apocalyptic number.

101666448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101666448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161170240).

101666448 is an abundant number, since it is smaller than the sum of its proper divisors (220674032).

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

101666448 is a wasteful number, since it uses less digits than its factorization.

101666448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 101666448 is about 10082.9781314848. The cubic root of 101666448 is about 466.7230145112.

The spelling of 101666448 in words is "one hundred one million, six hundred sixty-six thousand, four hundred forty-eight".