693290393 has 2 divisors, whose sum is σ = 693290394. Its totient is φ = 693290392.

The previous prime is 693290371. The next prime is 693290399. The reversal of 693290393 is 393092396.

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., 663989824 + 29300569 = 25768^2 + 5413^2 .

It is a cyclic number.

It is not a de Polignac number, because 693290393 - 2²⁰ = 692241817 is a prime.

It is not a weakly prime, because it can be changed into another prime (693290399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346645196 + 346645197.

It is an arithmetic number, because the mean of its divisors is an integer number (346645197).

Almost surely, 2^693290393 is an apocalyptic number.

It is an amenable number.

693290393 is a deficient number, since it is larger than the sum of its proper divisors (1).

693290393 is an equidigital number, since it uses as much as digits as its factorization.

693290393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236196, while the sum is 44.

The square root of 693290393 is about 26330.4081434375. The cubic root of 693290393 is about 885.0579906035.

The spelling of 693290393 in words is "six hundred ninety-three million, two hundred ninety thousand, three hundred ninety-three".