10689639 has 8 divisors (see below), whose sum is σ = 14277120. Its totient is φ = 7114296.

The previous prime is 10689629. The next prime is 10689713. The reversal of 10689639 is 93698601.

10689639 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 10689639 - 2⁵ = 10689607 is a prime.

It is a super-2 number, since 2×10689639² = 228536763900642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10689639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10689629) 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, 727 + ... + 4680.

It is an arithmetic number, because the mean of its divisors is an integer number (1784640).

Almost surely, 2^10689639 is an apocalyptic number.

10689639 is a deficient number, since it is larger than the sum of its proper divisors (3587481).

10689639 is an equidigital number, since it uses as much as digits as its factorization.

10689639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 10689639 is about 3269.5013381248. The cubic root of 10689639 is about 220.2863969778.

The spelling of 10689639 in words is "ten million, six hundred eighty-nine thousand, six hundred thirty-nine".