745668877 has 2 divisors, whose sum is σ = 745668878. Its totient is φ = 745668876.

The previous prime is 745668857. The next prime is 745668887. The reversal of 745668877 is 778866547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657101956 + 88566921 = 25634^2 + 9411^2 .

It is an emirp because it is prime and its reverse (778866547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745668877 - 2¹⁵ = 745636109 is a prime.

It is a super-2 number, since 2×745668877² = 1112044148252882258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745668857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372834438 + 372834439.

It is an arithmetic number, because the mean of its divisors is an integer number (372834439).

Almost surely, 2^745668877 is an apocalyptic number.

It is an amenable number.

745668877 is a deficient number, since it is larger than the sum of its proper divisors (1).

745668877 is an equidigital number, since it uses as much as digits as its factorization.

745668877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15805440, while the sum is 58.

The square root of 745668877 is about 27306.9382575198. The cubic root of 745668877 is about 906.8079916998.

The spelling of 745668877 in words is "seven hundred forty-five million, six hundred sixty-eight thousand, eight hundred seventy-seven".