689368031 has 8 divisors (see below), whose sum is σ = 753058944. Its totient is φ = 625847320.

The previous prime is 689368007. The next prime is 689368061. The reversal of 689368031 is 130863986.

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 689368031 - 2¹⁴ = 689351647 is a prime.

It is a super-2 number, since 2×689368031² = 950456564329633922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689368061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34001 + ... + 50346.

It is an arithmetic number, because the mean of its divisors is an integer number (94132368).

Almost surely, 2^689368031 is an apocalyptic number.

689368031 is a deficient number, since it is larger than the sum of its proper divisors (63690913).

689368031 is a wasteful number, since it uses less digits than its factorization.

689368031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85101.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 689368031 is about 26255.8189931299. The cubic root of 689368031 is about 883.3857306366.

It can be divided in two parts, 68936 and 8031, that added together give a palindrome (76967).

The spelling of 689368031 in words is "six hundred eighty-nine million, three hundred sixty-eight thousand, thirty-one".