108642590 has 16 divisors (see below), whose sum is σ = 223493472. Its totient is φ = 37248864.

The previous prime is 108642517. The next prime is 108642641. The reversal of 108642590 is 95246801.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 108642590.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 775949 + ... + 776088.

It is an arithmetic number, because the mean of its divisors is an integer number (13968342).

Almost surely, 2^108642590 is an apocalyptic number.

108642590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

108642590 is an abundant number, since it is smaller than the sum of its proper divisors (114850882).

108642590 is a wasteful number, since it uses less digits than its factorization.

108642590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552051.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 108642590 is about 10423.1756197428. The cubic root of 108642590 is about 477.1629374784.

The spelling of 108642590 in words is "one hundred eight million, six hundred forty-two thousand, five hundred ninety".