693971 has 4 divisors (see below), whose sum is σ = 700944. Its totient is φ = 687000.

The previous prime is 693967. The next prime is 693989. The reversal of 693971 is 179396.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 693971 - 2² = 693967 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 693971.

It is not an unprimeable number, because it can be changed into a prime (693961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3335 + ... + 3536.

It is an arithmetic number, because the mean of its divisors is an integer number (175236).

2⁶⁹³⁹⁷¹ is an apocalyptic number.

693971 is a deficient number, since it is larger than the sum of its proper divisors (6973).

693971 is a wasteful number, since it uses less digits than its factorization.

693971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6972.

The product of its digits is 10206, while the sum is 35.

The square root of 693971 is about 833.0492182338. The cubic root of 693971 is about 88.5347517983.

The spelling of 693971 in words is "six hundred ninety-three thousand, nine hundred seventy-one".