693881371 has 2 divisors, whose sum is σ = 693881372. Its totient is φ = 693881370.

The previous prime is 693881341. The next prime is 693881381. The reversal of 693881371 is 173188396.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 693881371 - 2¹¹ = 693879323 is a prime.

It is not a weakly prime, because it can be changed into another prime (693881341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346940685 + 346940686.

It is an arithmetic number, because the mean of its divisors is an integer number (346940686).

Almost surely, 2^693881371 is an apocalyptic number.

693881371 is a deficient number, since it is larger than the sum of its proper divisors (1).

693881371 is an equidigital number, since it uses as much as digits as its factorization.

693881371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 693881371 is about 26341.6281007837. The cubic root of 693881371 is about 885.3094010065.

The spelling of 693881371 in words is "six hundred ninety-three million, eight hundred eighty-one thousand, three hundred seventy-one".