693677899 has 2 divisors, whose sum is σ = 693677900. Its totient is φ = 693677898.

The previous prime is 693677891. The next prime is 693677947. The reversal of 693677899 is 998776396.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 693677899 - 2³ = 693677891 is a prime.

It is a super-2 number, since 2×693677899² = 962378055122108402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 693677899.

It is not a weakly prime, because it can be changed into another prime (693677891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346838949 + 346838950.

It is an arithmetic number, because the mean of its divisors is an integer number (346838950).

Almost surely, 2^693677899 is an apocalyptic number.

693677899 is a deficient number, since it is larger than the sum of its proper divisors (1).

693677899 is an equidigital number, since it uses as much as digits as its factorization.

693677899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30862944, while the sum is 64.

The square root of 693677899 is about 26337.7656417548. The cubic root of 693677899 is about 885.2228572579. Note that the first 3 decimals are identical.

The spelling of 693677899 in words is "six hundred ninety-three million, six hundred seventy-seven thousand, eight hundred ninety-nine".