608997111 has 4 divisors (see below), whose sum is σ = 811996152. Its totient is φ = 405998072.

The previous prime is 608997049. The next prime is 608997157. The reversal of 608997111 is 111799806.

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 608997111 - 2⁶ = 608997047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (608997211) 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, 101499516 + ... + 101499521.

It is an arithmetic number, because the mean of its divisors is an integer number (202999038).

Almost surely, 2^608997111 is an apocalyptic number.

608997111 is a deficient number, since it is larger than the sum of its proper divisors (202999041).

608997111 is a wasteful number, since it uses less digits than its factorization.

608997111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202999040.

The product of its (nonzero) digits is 27216, while the sum is 42.

The square root of 608997111 is about 24677.8668243428. The cubic root of 608997111 is about 847.6275764473.

The spelling of 608997111 in words is "six hundred eight million, nine hundred ninety-seven thousand, one hundred eleven".