693672420517 has 2 divisors, whose sum is σ = 693672420518. Its totient is φ = 693672420516.

The previous prime is 693672420487. The next prime is 693672420541. The reversal of 693672420517 is 715024276396.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 692621753121 + 1050667396 = 832239^2 + 32414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-693672420517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (693672420547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346836210258 + 346836210259.

It is an arithmetic number, because the mean of its divisors is an integer number (346836210259).

Almost surely, 2^693672420517 is an apocalyptic number.

It is an amenable number.

693672420517 is a deficient number, since it is larger than the sum of its proper divisors (1).

693672420517 is an equidigital number, since it uses as much as digits as its factorization.

693672420517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 693672420517 in words is "six hundred ninety-three billion, six hundred seventy-two million, four hundred twenty thousand, five hundred seventeen".