618896997 has 8 divisors (see below), whose sum is σ = 916884480. Its totient is φ = 412597980.

The previous prime is 618896923. The next prime is 618897007. The reversal of 618896997 is 799698816.

618896997 is a `hidden beast` number, since 618 + 8 + 9 + 6 + 9 + 9 + 7 = 666.

It is not a de Polignac number, because 618896997 - 2¹⁰ = 618895973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618896197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11461029 + ... + 11461082.

It is an arithmetic number, because the mean of its divisors is an integer number (114610560).

Almost surely, 2^618896997 is an apocalyptic number.

It is an amenable number.

618896997 is a deficient number, since it is larger than the sum of its proper divisors (297987483).

618896997 is a wasteful number, since it uses less digits than its factorization.

618896997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22922120 (or 22922114 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The square root of 618896997 is about 24877.6405030702. The cubic root of 618896997 is about 852.1959353973.

It can be divided in two parts, 61889 and 6997, that added together give a palindrome (68886).

The spelling of 618896997 in words is "six hundred eighteen million, eight hundred ninety-six thousand, nine hundred ninety-seven".