108772691 has 4 divisors (see below), whose sum is σ = 110396232. Its totient is φ = 107149152.

The previous prime is 108772687. The next prime is 108772693. The reversal of 108772691 is 196277801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 108772691 - 2² = 108772687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108772693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811670 + ... + 811803.

It is an arithmetic number, because the mean of its divisors is an integer number (27599058).

Almost surely, 2^108772691 is an apocalyptic number.

108772691 is a deficient number, since it is larger than the sum of its proper divisors (1623541).

108772691 is an equidigital number, since it uses as much as digits as its factorization.

108772691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623540.

The product of its (nonzero) digits is 42336, while the sum is 41.

The square root of 108772691 is about 10429.4147007394. The cubic root of 108772691 is about 477.3533312319.

The spelling of 108772691 in words is "one hundred eight million, seven hundred seventy-two thousand, six hundred ninety-one".