10640993 has 4 divisors (see below), whose sum is σ = 11608368. Its totient is φ = 9673620.

The previous prime is 10640957. The next prime is 10641011. The reversal of 10640993 is 39904601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-10640993 is a prime.

It is a super-2 number, since 2×10640993² = 226461464052098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10640923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483671 + ... + 483692.

It is an arithmetic number, because the mean of its divisors is an integer number (2902092).

Almost surely, 2^10640993 is an apocalyptic number.

It is an amenable number.

10640993 is a deficient number, since it is larger than the sum of its proper divisors (967375).

10640993 is an equidigital number, since it uses as much as digits as its factorization.

10640993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967374.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 10640993 is about 3262.0534943498. The cubic root of 10640993 is about 219.9517318349.

The spelling of 10640993 in words is "ten million, six hundred forty thousand, nine hundred ninety-three".