747672557 has 2 divisors, whose sum is σ = 747672558. Its totient is φ = 747672556.

The previous prime is 747672533. The next prime is 747672589. The reversal of 747672557 is 755276747.

It is a happy number.

747672557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 478253161 + 269419396 = 21869^2 + 16414^2 .

It is a cyclic number.

It is not a de Polignac number, because 747672557 - 2²⁶ = 680563693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (747872557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373836278 + 373836279.

It is an arithmetic number, because the mean of its divisors is an integer number (373836279).

Almost surely, 2^747672557 is an apocalyptic number.

It is an amenable number.

747672557 is a deficient number, since it is larger than the sum of its proper divisors (1).

747672557 is an equidigital number, since it uses as much as digits as its factorization.

747672557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2881200, while the sum is 50.

The square root of 747672557 is about 27343.6017561696. The cubic root of 747672557 is about 907.6194904220.

The spelling of 747672557 in words is "seven hundred forty-seven million, six hundred seventy-two thousand, five hundred fifty-seven".