10640287 has 8 divisors (see below), whose sum is σ = 12180096. Its totient is φ = 9105432.

The previous prime is 10640281. The next prime is 10640293. The reversal of 10640287 is 78204601.

It is an interprime number because it is at equal distance from previous prime (10640281) and next prime (10640293).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10640287 - 2⁷ = 10640159 is a prime.

It is a super-2 number, since 2×10640287² = 226431414884738, 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 (10640281) 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, 7488 + ... + 8794.

It is an arithmetic number, because the mean of its divisors is an integer number (1522512).

Almost surely, 2^10640287 is an apocalyptic number.

10640287 is a deficient number, since it is larger than the sum of its proper divisors (1539809).

10640287 is a wasteful number, since it uses less digits than its factorization.

10640287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 10640287 is about 3261.9452785110. The cubic root of 10640287 is about 219.9468673341.

Adding to 10640287 its reverse (78204601), we get a palindrome (88844888).

The spelling of 10640287 in words is "ten million, six hundred forty thousand, two hundred eighty-seven".