10654639 has 4 divisors (see below), whose sum is σ = 10662840. Its totient is φ = 10646440.

The previous prime is 10654603. The next prime is 10654661. The reversal of 10654639 is 93645601.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93645601 = 7 ⋅13377943.

It is a cyclic number.

It is not a de Polignac number, because 10654639 - 2¹⁷ = 10523567 is a prime.

It is a super-2 number, since 2×10654639² = 227042664440642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10654439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1672 + ... + 4909.

It is an arithmetic number, because the mean of its divisors is an integer number (2665710).

Almost surely, 2^10654639 is an apocalyptic number.

10654639 is a deficient number, since it is larger than the sum of its proper divisors (8201).

10654639 is an equidigital number, since it uses as much as digits as its factorization.

10654639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8200.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 10654639 is about 3264.1444514604. The cubic root of 10654639 is about 220.0457136410.

It can be divided in two parts, 106 and 54639, that added together give a palindrome (54745).

The spelling of 10654639 in words is "ten million, six hundred fifty-four thousand, six hundred thirty-nine".