716664449 has 2 divisors, whose sum is σ = 716664450. Its totient is φ = 716664448.

The previous prime is 716664409. The next prime is 716664467. The reversal of 716664449 is 944466617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 612216049 + 104448400 = 24743^2 + 10220^2 .

It is an emirp because it is prime and its reverse (944466617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 716664449 - 2¹² = 716660353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (716664409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358332224 + 358332225.

It is an arithmetic number, because the mean of its divisors is an integer number (358332225).

Almost surely, 2^716664449 is an apocalyptic number.

It is an amenable number.

716664449 is a deficient number, since it is larger than the sum of its proper divisors (1).

716664449 is an equidigital number, since it uses as much as digits as its factorization.

716664449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 47.

The square root of 716664449 is about 26770.5892538808. The cubic root of 716664449 is about 894.8947366397.

The spelling of 716664449 in words is "seven hundred sixteen million, six hundred sixty-four thousand, four hundred forty-nine".