745595989 has 2 divisors, whose sum is σ = 745595990. Its totient is φ = 745595988.

The previous prime is 745595941. The next prime is 745595993. The reversal of 745595989 is 989595547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 731269764 + 14326225 = 27042^2 + 3785^2 .

It is a cyclic number.

It is not a de Polignac number, because 745595989 - 2¹¹ = 745593941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745595689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372797994 + 372797995.

It is an arithmetic number, because the mean of its divisors is an integer number (372797995).

Almost surely, 2^745595989 is an apocalyptic number.

It is an amenable number.

745595989 is a deficient number, since it is larger than the sum of its proper divisors (1).

745595989 is an equidigital number, since it uses as much as digits as its factorization.

745595989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412000, while the sum is 61.

The square root of 745595989 is about 27305.6036190376. The cubic root of 745595989 is about 906.7784443691.

The spelling of 745595989 in words is "seven hundred forty-five million, five hundred ninety-five thousand, nine hundred eighty-nine".