100665964 has 12 divisors (see below), whose sum is σ = 201331984. Its totient is φ = 43142544.

The previous prime is 100665949. The next prime is 100665973. The reversal of 100665964 is 469566001.

100665964 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1797579 + ... + 1797634.

Almost surely, 2^100665964 is an apocalyptic number.

100665964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

100665964 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

100665964 is a wasteful number, since it uses less digits than its factorization.

100665964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595224 (or 3595222 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 100665964 is about 10033.2429453293. The cubic root of 100665964 is about 465.1869814951.

Adding to 100665964 its sum of digits (37), we get a palindrome (100666001).

The spelling of 100665964 in words is "one hundred million, six hundred sixty-five thousand, nine hundred sixty-four".