745735631 has 2 divisors, whose sum is σ = 745735632. Its totient is φ = 745735630.

The previous prime is 745735619. The next prime is 745735637. The reversal of 745735631 is 136537547.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 745735631 - 2⁶ = 745735567 is a prime.

It is a super-2 number, since 2×745735631² = 1112243262685936322, 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 (745735637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372867815 + 372867816.

It is an arithmetic number, because the mean of its divisors is an integer number (372867816).

Almost surely, 2^745735631 is an apocalyptic number.

745735631 is a deficient number, since it is larger than the sum of its proper divisors (1).

745735631 is an equidigital number, since it uses as much as digits as its factorization.

745735631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 41.

The square root of 745735631 is about 27308.1605202547. The cubic root of 745735631 is about 906.8350507409.

The spelling of 745735631 in words is "seven hundred forty-five million, seven hundred thirty-five thousand, six hundred thirty-one".