100644534 has 24 divisors (see below), whose sum is σ = 218585952. Its totient is φ = 33467760.

The previous prime is 100644497. The next prime is 100644601. The reversal of 100644534 is 435446001.

100644534 is a `hidden beast` number, since 10 + 0 + 644 + 5 + 3 + 4 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100644498 and 100644507.

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, 1272 + ... + 14244.

It is an arithmetic number, because the mean of its divisors is an integer number (9107748).

Almost surely, 2^100644534 is an apocalyptic number.

100644534 is an abundant number, since it is smaller than the sum of its proper divisors (117941418).

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

100644534 is a wasteful number, since it uses less digits than its factorization.

100644534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13412 (or 13409 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 100644534 is about 10032.1749386661. The cubic root of 100644534 is about 465.1539691306.

The spelling of 100644534 in words is "one hundred million, six hundred forty-four thousand, five hundred thirty-four".