618897007 has 2 divisors, whose sum is σ = 618897008. Its totient is φ = 618897006.

The previous prime is 618896923. The next prime is 618897031. The reversal of 618897007 is 700798816.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618897007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618897067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309448503 + 309448504.

It is an arithmetic number, because the mean of its divisors is an integer number (309448504).

Almost surely, 2^618897007 is an apocalyptic number.

618897007 is a deficient number, since it is larger than the sum of its proper divisors (1).

618897007 is an equidigital number, since it uses as much as digits as its factorization.

618897007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 618897007 is about 24877.6407040539. The cubic root of 618897007 is about 852.1959399872.

The spelling of 618897007 in words is "six hundred eighteen million, eight hundred ninety-seven thousand, seven".