693641 has 8 divisors (see below), whose sum is σ = 753480. Its totient is φ = 634752.

The previous prime is 693629. The next prime is 693659. The reversal of 693641 is 146396.

It can be written as a sum of positive squares in 4 ways, for example, as 60025 + 633616 = 245^2 + 796^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-693641 is a prime.

It is a super-2 number, since 2×693641² = 962275673762, which contains 22 as substring.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2861 + ... + 3093.

It is an arithmetic number, because the mean of its divisors is an integer number (94185).

2⁶⁹³⁶⁴¹ is an apocalyptic number.

It is an amenable number.

693641 is a deficient number, since it is larger than the sum of its proper divisors (59839).

693641 is a wasteful number, since it uses less digits than its factorization.

693641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475.

The product of its digits is 3888, while the sum is 29.

The square root of 693641 is about 832.8511271530. The cubic root of 693641 is about 88.5207161012.

The spelling of 693641 in words is "six hundred ninety-three thousand, six hundred forty-one".