693972563 has 2 divisors, whose sum is σ = 693972564. Its totient is φ = 693972562.

The previous prime is 693972527. The next prime is 693972569. The reversal of 693972563 is 365279396.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 693972563 - 2¹² = 693968467 is a prime.

It is not a weakly prime, because it can be changed into another prime (693972569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346986281 + 346986282.

It is an arithmetic number, because the mean of its divisors is an integer number (346986282).

Almost surely, 2^693972563 is an apocalyptic number.

693972563 is a deficient number, since it is larger than the sum of its proper divisors (1).

693972563 is an equidigital number, since it uses as much as digits as its factorization.

693972563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 50.

The square root of 693972563 is about 26343.3589923533. The cubic root of 693972563 is about 885.3481826589.

The spelling of 693972563 in words is "six hundred ninety-three million, nine hundred seventy-two thousand, five hundred sixty-three".