108640554 has 64 divisors (see below), whose sum is σ = 253255680. Its totient is φ = 30744000.

The previous prime is 108640541. The next prime is 108640601. The reversal of 108640554 is 455046801.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58419 + ... + 60249.

It is an arithmetic number, because the mean of its divisors is an integer number (3957120).

Almost surely, 2^108640554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108640554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126627840).

108640554 is an abundant number, since it is smaller than the sum of its proper divisors (144615126).

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

108640554 is a wasteful number, since it uses less digits than its factorization.

108640554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 108640554 is about 10423.0779523133. The cubic root of 108640554 is about 477.1599567266.

The spelling of 108640554 in words is "one hundred eight million, six hundred forty thousand, five hundred fifty-four".