718005997 has 2 divisors, whose sum is σ = 718005998. Its totient is φ = 718005996.

The previous prime is 718005989. The next prime is 718006001. The reversal of 718005997 is 799500817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 454073481 + 263932516 = 21309^2 + 16246^2 .

It is an emirp because it is prime and its reverse (799500817) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 718005997 - 2³ = 718005989 is a prime.

It is a super-2 number, since 2×718005997² = 1031065223455928018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (718005907) 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 as a sum of consecutive naturals, namely, 359002998 + 359002999.

It is an arithmetic number, because the mean of its divisors is an integer number (359002999).

Almost surely, 2^718005997 is an apocalyptic number.

It is an amenable number.

718005997 is a deficient number, since it is larger than the sum of its proper divisors (1).

718005997 is an equidigital number, since it uses as much as digits as its factorization.

718005997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 46.

The square root of 718005997 is about 26795.6339167410. The cubic root of 718005997 is about 895.4527829755.

The spelling of 718005997 in words is "seven hundred eighteen million, five thousand, nine hundred ninety-seven".