973565903657 has 2 divisors, whose sum is σ = 973565903658. Its totient is φ = 973565903656.

The previous prime is 973565903647. The next prime is 973565903671. The reversal of 973565903657 is 756309565379.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 734742123241 + 238823780416 = 857171^2 + 488696^2 .

It is a cyclic number.

It is not a de Polignac number, because 973565903657 - 2³⁶ = 904846426921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 973565903593 and 973565903602.

It is not a weakly prime, because it can be changed into another prime (973565903617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486782951828 + 486782951829.

It is an arithmetic number, because the mean of its divisors is an integer number (486782951829).

Almost surely, 2^973565903657 is an apocalyptic number.

It is an amenable number.

973565903657 is a deficient number, since it is larger than the sum of its proper divisors (1).

973565903657 is an equidigital number, since it uses as much as digits as its factorization.

973565903657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160744500, while the sum is 65.

The spelling of 973565903657 in words is "nine hundred seventy-three billion, five hundred sixty-five million, nine hundred three thousand, six hundred fifty-seven".