718722899 has 4 divisors (see below), whose sum is σ = 756550440. Its totient is φ = 680895360.

The previous prime is 718722871. The next prime is 718722913. The reversal of 718722899 is 998227817.

It is a happy number.

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 718722899 - 2²⁰ = 717674323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 718722899.

It is not an unprimeable number, because it can be changed into a prime (718724899) 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, 18913742 + ... + 18913779.

It is an arithmetic number, because the mean of its divisors is an integer number (189137610).

Almost surely, 2^718722899 is an apocalyptic number.

718722899 is a deficient number, since it is larger than the sum of its proper divisors (37827541).

718722899 is a wasteful number, since it uses less digits than its factorization.

718722899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37827540.

The product of its digits is 1016064, while the sum is 53.

The square root of 718722899 is about 26809.0077958883. The cubic root of 718722899 is about 895.7507091568.

The spelling of 718722899 in words is "seven hundred eighteen million, seven hundred twenty-two thousand, eight hundred ninety-nine".