693631 has 8 divisors (see below), whose sum is σ = 718704. Its totient is φ = 669120.

The previous prime is 693629. The next prime is 693659. The reversal of 693631 is 136396.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 693631 - 2¹ = 693629 is a prime.

It is a super-2 number, since 2×693631² = 962247928322, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 693631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4995 + ... + 5131.

It is an arithmetic number, because the mean of its divisors is an integer number (89838).

2⁶⁹³⁶³¹ is an apocalyptic number.

693631 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

693631 is a deficient number, since it is larger than the sum of its proper divisors (25073).

693631 is a wasteful number, since it uses less digits than its factorization.

693631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281.

The product of its digits is 2916, while the sum is 28.

The square root of 693631 is about 832.8451236575. The cubic root of 693631 is about 88.5202907075.

The spelling of 693631 in words is "six hundred ninety-three thousand, six hundred thirty-one".