10639807 has 4 divisors (see below), whose sum is σ = 11265696. Its totient is φ = 10013920.

The previous prime is 10639793. The next prime is 10639819. The reversal of 10639807 is 70893601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70893601 = 113 ⋅627377.

It is a cyclic number.

It is not a de Polignac number, because 10639807 - 2²³ = 2251199 is a prime.

It is a super-2 number, since 2×10639807² = 226410985994498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10639207) 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, 312919 + ... + 312952.

It is an arithmetic number, because the mean of its divisors is an integer number (2816424).

Almost surely, 2^10639807 is an apocalyptic number.

10639807 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

10639807 is a deficient number, since it is larger than the sum of its proper divisors (625889).

10639807 is an equidigital number, since it uses as much as digits as its factorization.

10639807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625888.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 10639807 is about 3261.8717019527. The cubic root of 10639807 is about 219.9435599019.

The spelling of 10639807 in words is "ten million, six hundred thirty-nine thousand, eight hundred seven".