745343657 has 2 divisors, whose sum is σ = 745343658. Its totient is φ = 745343656.

The previous prime is 745343629. The next prime is 745343659. The reversal of 745343657 is 756343547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 696748816 + 48594841 = 26396^2 + 6971^2 .

It is a cyclic number.

It is not a de Polignac number, because 745343657 - 2¹⁴ = 745327273 is a prime.

Together with 745343659, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (745343659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372671828 + 372671829.

It is an arithmetic number, because the mean of its divisors is an integer number (372671829).

Almost surely, 2^745343657 is an apocalyptic number.

It is an amenable number.

745343657 is a deficient number, since it is larger than the sum of its proper divisors (1).

745343657 is an equidigital number, since it uses as much as digits as its factorization.

745343657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 44.

The square root of 745343657 is about 27300.9827112505. The cubic root of 745343657 is about 906.6761391714.

The spelling of 745343657 in words is "seven hundred forty-five million, three hundred forty-three thousand, six hundred fifty-seven".