109638697 has 16 divisors (see below), whose sum is σ = 129254400. Its totient is φ = 91057680.

The previous prime is 109638689. The next prime is 109638701. The reversal of 109638697 is 796836901.

It is not a de Polignac number, because 109638697 - 2³ = 109638689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109638697.

It is not an unprimeable number, because it can be changed into a prime (109638667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27454 + ... + 31192.

It is an arithmetic number, because the mean of its divisors is an integer number (8078400).

Almost surely, 2^109638697 is an apocalyptic number.

It is an amenable number.

109638697 is a deficient number, since it is larger than the sum of its proper divisors (19615703).

109638697 is an equidigital number, since it uses as much as digits as its factorization.

109638697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 109638697 is about 10470.8498699962. The cubic root of 109638697 is about 478.6168180692.

It can be divided in two parts, 1096 and 38697, that added together give a palindrome (39793).

The spelling of 109638697 in words is "one hundred nine million, six hundred thirty-eight thousand, six hundred ninety-seven".