109497564 has 72 divisors (see below), whose sum is σ = 306528768. Its totient is φ = 32677920.

The previous prime is 109497559. The next prime is 109497581. The reversal of 109497564 is 465794901.

109497564 is a `hidden beast` number, since 109 + 497 + 56 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24469 + ... + 28595.

It is an arithmetic number, because the mean of its divisors is an integer number (4257344).

Almost surely, 2^109497564 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 109497564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153264384).

109497564 is an abundant number, since it is smaller than the sum of its proper divisors (197031204).

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

109497564 is a wasteful number, since it uses less digits than its factorization.

109497564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4215 (or 4210 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 109497564 is about 10464.1083709985. The cubic root of 109497564 is about 478.4113625318.

The spelling of 109497564 in words is "one hundred nine million, four hundred ninety-seven thousand, five hundred sixty-four".