693139 has 6 divisors (see below), whose sum is σ = 733460. Its totient is φ = 653220.

The previous prime is 693137. The next prime is 693149. The reversal of 693139 is 931396.

693139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 693139 - 2¹ = 693137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 693139.

It is not an unprimeable number, because it can be changed into a prime (693137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3534 + ... + 3724.

2⁶⁹³¹³⁹ is an apocalyptic number.

693139 is a deficient number, since it is larger than the sum of its proper divisors (40321).

693139 is an equidigital number, since it uses as much as digits as its factorization.

693139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 210 counting only the distinct ones).

The product of its digits is 4374, while the sum is 31.

The square root of 693139 is about 832.5496982163. The cubic root of 693139 is about 88.4993562893.

The spelling of 693139 in words is "six hundred ninety-three thousand, one hundred thirty-nine".