747540687617 has 2 divisors, whose sum is σ = 747540687618. Its totient is φ = 747540687616.

The previous prime is 747540687589. The next prime is 747540687629. The reversal of 747540687617 is 716786045747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 567466916416 + 180073771201 = 753304^2 + 424351^2 .

It is a cyclic number.

It is not a de Polignac number, because 747540687617 - 2¹⁴ = 747540671233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 747540687617.

It is not a weakly prime, because it can be changed into another prime (747540087617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 373770343808 + 373770343809.

It is an arithmetic number, because the mean of its divisors is an integer number (373770343809).

Almost surely, 2^747540687617 is an apocalyptic number.

It is an amenable number.

747540687617 is a deficient number, since it is larger than the sum of its proper divisors (1).

747540687617 is an equidigital number, since it uses as much as digits as its factorization.

747540687617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55319040, while the sum is 62.

The spelling of 747540687617 in words is "seven hundred forty-seven billion, five hundred forty million, six hundred eighty-seven thousand, six hundred seventeen".