747645331 has 2 divisors, whose sum is σ = 747645332. Its totient is φ = 747645330.

The previous prime is 747645323. The next prime is 747645359. The reversal of 747645331 is 133546747.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 747645331 - 2³ = 747645323 is a prime.

It is a super-2 number, since 2×747645331² = 1117947081932199122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (747645361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373822665 + 373822666.

It is an arithmetic number, because the mean of its divisors is an integer number (373822666).

Almost surely, 2^747645331 is an apocalyptic number.

747645331 is a deficient number, since it is larger than the sum of its proper divisors (1).

747645331 is an equidigital number, since it uses as much as digits as its factorization.

747645331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 40.

The square root of 747645331 is about 27343.1039020811. The cubic root of 747645331 is about 907.6084735011.

The spelling of 747645331 in words is "seven hundred forty-seven million, six hundred forty-five thousand, three hundred thirty-one".