718620061 has 2 divisors, whose sum is σ = 718620062. Its totient is φ = 718620060.

The previous prime is 718620047. The next prime is 718620121. The reversal of 718620061 is 160026817.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 708571161 + 10048900 = 26619^2 + 3170^2 .

It is a cyclic number.

It is not a de Polignac number, because 718620061 - 2¹⁹ = 718095773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (718620011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359310030 + 359310031.

It is an arithmetic number, because the mean of its divisors is an integer number (359310031).

Almost surely, 2^718620061 is an apocalyptic number.

It is an amenable number.

718620061 is a deficient number, since it is larger than the sum of its proper divisors (1).

718620061 is an equidigital number, since it uses as much as digits as its factorization.

718620061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 718620061 is about 26807.0897525263. The cubic root of 718620061 is about 895.7079844825.

Adding to 718620061 its reverse (160026817), we get a palindrome (878646878).

The spelling of 718620061 in words is "seven hundred eighteen million, six hundred twenty thousand, sixty-one".