618008997 has 4 divisors (see below), whose sum is σ = 824012000. Its totient is φ = 412005996.

The previous prime is 618008987. The next prime is 618008999. The reversal of 618008997 is 799800816.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 618008997 - 2⁶ = 618008933 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 (618008999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103001497 + ... + 103001502.

It is an arithmetic number, because the mean of its divisors is an integer number (206003000).

Almost surely, 2^618008997 is an apocalyptic number.

It is an amenable number.

618008997 is a deficient number, since it is larger than the sum of its proper divisors (206003003).

618008997 is a wasteful number, since it uses less digits than its factorization.

618008997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206003002.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 618008997 is about 24859.7867448617. The cubic root of 618008997 is about 851.7881603749.

The spelling of 618008997 in words is "six hundred eighteen million, eight thousand, nine hundred ninety-seven".