10645639 has 8 divisors (see below), whose sum is σ = 11270160. Its totient is φ = 10038336.

The previous prime is 10645637. The next prime is 10645673. The reversal of 10645639 is 93654601.

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 10645639 - 2¹ = 10645637 is a prime.

It is a super-2 number, since 2×10645639² = 226659259436642, 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 (10645637) 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, 3022 + ... + 5515.

It is an arithmetic number, because the mean of its divisors is an integer number (1408770).

Almost surely, 2^10645639 is an apocalyptic number.

10645639 is a deficient number, since it is larger than the sum of its proper divisors (624521).

10645639 is an equidigital number, since it uses as much as digits as its factorization.

10645639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8609.

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

The square root of 10645639 is about 3262.7655447488. The cubic root of 10645639 is about 219.9837384675.

The spelling of 10645639 in words is "ten million, six hundred forty-five thousand, six hundred thirty-nine".