100670816 has 72 divisors (see below), whose sum is σ = 218788920. Its totient is φ = 45467136.

The previous prime is 100670789. The next prime is 100670831. The reversal of 100670816 is 618076001.

It is a super-2 number, since 2×100670816² = 20269226388211712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321476 + ... + 321788.

It is an arithmetic number, because the mean of its divisors is an integer number (3038735).

Almost surely, 2^100670816 is an apocalyptic number.

100670816 is a gapful number since it is divisible by the number (16) 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 100670816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109394460).

100670816 is an abundant number, since it is smaller than the sum of its proper divisors (118118104).

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

100670816 is a wasteful number, since it uses less digits than its factorization.

100670816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 100670816 is about 10033.4847386140. The cubic root of 100670816 is about 465.1944552260.

The spelling of 100670816 in words is "one hundred million, six hundred seventy thousand, eight hundred sixteen".