194707697 has 2 divisors, whose sum is σ = 194707698. Its totient is φ = 194707696.

The previous prime is 194707651. The next prime is 194707819. The reversal of 194707697 is 796707491.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193877776 + 829921 = 13924^2 + 911^2 .

It is an emirp because it is prime and its reverse (796707491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194707697 - 2⁶ = 194707633 is a prime.

It is a super-2 number, since 2×194707697² = 75822174542087618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (194707607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97353848 + 97353849.

It is an arithmetic number, because the mean of its divisors is an integer number (97353849).

Almost surely, 2^194707697 is an apocalyptic number.

It is an amenable number.

194707697 is a deficient number, since it is larger than the sum of its proper divisors (1).

194707697 is an equidigital number, since it uses as much as digits as its factorization.

194707697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 194707697 is about 13953.7699923712. The cubic root of 194707697 is about 579.5991056462.

The spelling of 194707697 in words is "one hundred ninety-four million, seven hundred seven thousand, six hundred ninety-seven".