608982991 has 4 divisors (see below), whose sum is σ = 609070032. Its totient is φ = 608895952.

The previous prime is 608982971. The next prime is 608983021. The reversal of 608982991 is 199289806.

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 608982991 - 2¹¹ = 608980943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (608982931) 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, 32011 + ... + 47356.

It is an arithmetic number, because the mean of its divisors is an integer number (152267508).

Almost surely, 2^608982991 is an apocalyptic number.

608982991 is a deficient number, since it is larger than the sum of its proper divisors (87041).

608982991 is an equidigital number, since it uses as much as digits as its factorization.

608982991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87040.

The product of its (nonzero) digits is 559872, while the sum is 52.

The square root of 608982991 is about 24677.5807363688. The cubic root of 608982991 is about 847.6210254617.

The spelling of 608982991 in words is "six hundred eight million, nine hundred eighty-two thousand, nine hundred ninety-one".