745894631 has 2 divisors, whose sum is σ = 745894632. Its totient is φ = 745894630.

The previous prime is 745894621. The next prime is 745894651. The reversal of 745894631 is 136498547.

It is a weak prime.

It is an emirp because it is prime and its reverse (136498547) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745894631 is a prime.

It is a super-2 number, since 2×745894631² = 1112717601109252322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745894621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372947315 + 372947316.

It is an arithmetic number, because the mean of its divisors is an integer number (372947316).

Almost surely, 2^745894631 is an apocalyptic number.

745894631 is a deficient number, since it is larger than the sum of its proper divisors (1).

745894631 is an equidigital number, since it uses as much as digits as its factorization.

745894631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 47.

The square root of 745894631 is about 27311.0715827849. The cubic root of 745894631 is about 906.8994956196.

The spelling of 745894631 in words is "seven hundred forty-five million, eight hundred ninety-four thousand, six hundred thirty-one".