608138997 has 8 divisors (see below), whose sum is σ = 837008640. Its totient is φ = 392347680.

The previous prime is 608138989. The next prime is 608139031. The reversal of 608138997 is 799831806.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 608138997 - 2³ = 608138989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (608138917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3269472 + ... + 3269657.

It is an arithmetic number, because the mean of its divisors is an integer number (104626080).

Almost surely, 2^608138997 is an apocalyptic number.

It is an amenable number.

608138997 is a deficient number, since it is larger than the sum of its proper divisors (228869643).

608138997 is a wasteful number, since it uses less digits than its factorization.

608138997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6539163.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 608138997 is about 24660.4743871646. The cubic root of 608138997 is about 847.2292696920.

It can be divided in two parts, 60813899 and 7, that added together give a triangular number (60813906 = T₁₁₀₂₈).

The spelling of 608138997 in words is "six hundred eight million, one hundred thirty-eight thousand, nine hundred ninety-seven".