11320639 has 6 divisors (see below), whose sum is σ = 12443480. Its totient is φ = 10291380.

The previous prime is 11320609. The next prime is 11320649. The reversal of 11320639 is 93602311.

It is not a de Polignac number, because 11320639 - 2⁵ = 11320607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11320609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46659 + ... + 46900.

Almost surely, 2^11320639 is an apocalyptic number.

11320639 is a deficient number, since it is larger than the sum of its proper divisors (1122841).

11320639 is an equidigital number, since it uses as much as digits as its factorization.

11320639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93581 (or 93570 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 11320639 is about 3364.6157284302. The cubic root of 11320639 is about 224.5382398242.

The spelling of 11320639 in words is "eleven million, three hundred twenty thousand, six hundred thirty-nine".