693953 has 4 divisors (see below), whose sum is σ = 747348. Its totient is φ = 640560.

The previous prime is 693943. The next prime is 693961. The reversal of 693953 is 359396.

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

It can be written as a sum of positive squares in 2 ways, for example, as 97969 + 595984 = 313^2 + 772^2 .

It is a cyclic number.

It is not a de Polignac number, because 693953 - 2⁸ = 693697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (693943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26678 + ... + 26703.

It is an arithmetic number, because the mean of its divisors is an integer number (186837).

2⁶⁹³⁹⁵³ is an apocalyptic number.

It is an amenable number.

693953 is a deficient number, since it is larger than the sum of its proper divisors (53395).

693953 is a wasteful number, since it uses less digits than its factorization.

693953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53394.

The product of its digits is 21870, while the sum is 35.

The square root of 693953 is about 833.0384144804. The cubic root of 693953 is about 88.5339863296.

The spelling of 693953 in words is "six hundred ninety-three thousand, nine hundred fifty-three".