745993387 has 2 divisors, whose sum is σ = 745993388. Its totient is φ = 745993386.

The previous prime is 745993357. The next prime is 745993399. The reversal of 745993387 is 783399547.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745993387 is a prime.

It is a super-2 number, since 2×745993387² = 1113012266895463538, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (745993307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372996693 + 372996694.

It is an arithmetic number, because the mean of its divisors is an integer number (372996694).

Almost surely, 2^745993387 is an apocalyptic number.

745993387 is a deficient number, since it is larger than the sum of its proper divisors (1).

745993387 is an equidigital number, since it uses as much as digits as its factorization.

745993387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5715360, while the sum is 55.

The square root of 745993387 is about 27312.8795076609. The cubic root of 745993387 is about 906.9395181690.

The spelling of 745993387 in words is "seven hundred forty-five million, nine hundred ninety-three thousand, three hundred eighty-seven".