100622664 has 72 divisors (see below), whose sum is σ = 277253730. Its totient is φ = 32966400.

The previous prime is 100622653. The next prime is 100622701. The reversal of 100622664 is 466226001.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 95062500 + 5560164 = 9750^2 + 2358^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 734404 + ... + 734540.

Almost surely, 2^100622664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100622664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138626865).

100622664 is an abundant number, since it is smaller than the sum of its proper divisors (176631066).

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

100622664 is a wasteful number, since it uses less digits than its factorization.

100622664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 100622664 is about 10031.0848864916. The cubic root of 100622664 is about 465.1202741255.

Adding to 100622664 its reverse (466226001), we get a palindrome (566848665).

The spelling of 100622664 in words is "one hundred million, six hundred twenty-two thousand, six hundred sixty-four".