10640540 has 12 divisors (see below), whose sum is σ = 22345176. Its totient is φ = 4256208.

The previous prime is 10640527. The next prime is 10640543. The reversal of 10640540 is 4504601.

It is a happy number.

It is a super-2 number, since 2×10640540² = 226442182983200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 532027 = 10640540 / (1 + 0 + 6 + 4 + 0 + 5 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10640543) 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, 265994 + ... + 266033.

It is an arithmetic number, because the mean of its divisors is an integer number (1862098).

Almost surely, 2^10640540 is an apocalyptic number.

10640540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10640540 is an abundant number, since it is smaller than the sum of its proper divisors (11704636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10640540 is a wasteful number, since it uses less digits than its factorization.

10640540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532036 (or 532034 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 10640540 is about 3261.9840588206. The cubic root of 10640540 is about 219.9486105865.

The spelling of 10640540 in words is "ten million, six hundred forty thousand, five hundred forty".