747651257 has 2 divisors, whose sum is σ = 747651258. Its totient is φ = 747651256.

The previous prime is 747651251. The next prime is 747651263. The reversal of 747651257 is 752156747.

It is a balanced prime because it is at equal distance from previous prime (747651251) and next prime (747651263).

It can be written as a sum of positive squares in only one way, i.e., 741799696 + 5851561 = 27236^2 + 2419^2 .

It is a cyclic number.

It is not a de Polignac number, because 747651257 - 2⁴ = 747651241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (747651251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373825628 + 373825629.

It is an arithmetic number, because the mean of its divisors is an integer number (373825629).

Almost surely, 2^747651257 is an apocalyptic number.

It is an amenable number.

747651257 is a deficient number, since it is larger than the sum of its proper divisors (1).

747651257 is an equidigital number, since it uses as much as digits as its factorization.

747651257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 411600, while the sum is 44.

The square root of 747651257 is about 27343.2122655697. The cubic root of 747651257 is about 907.6108714624.

The spelling of 747651257 in words is "seven hundred forty-seven million, six hundred fifty-one thousand, two hundred fifty-seven".