693689629 has 2 divisors, whose sum is σ = 693689630. Its totient is φ = 693689628.

The previous prime is 693689627. The next prime is 693689651. The reversal of 693689629 is 926986396.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 446476900 + 247212729 = 21130^2 + 15723^2 .

It is a cyclic number.

It is not a de Polignac number, because 693689629 - 2¹ = 693689627 is a prime.

Together with 693689627, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (693689627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346844814 + 346844815.

It is an arithmetic number, because the mean of its divisors is an integer number (346844815).

Almost surely, 2^693689629 is an apocalyptic number.

It is an amenable number.

693689629 is a deficient number, since it is larger than the sum of its proper divisors (1).

693689629 is an equidigital number, since it uses as much as digits as its factorization.

693689629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7558272, while the sum is 58.

The square root of 693689629 is about 26337.9883248512. The cubic root of 693689629 is about 885.2278468963.

The spelling of 693689629 in words is "six hundred ninety-three million, six hundred eighty-nine thousand, six hundred twenty-nine".