10667665 has 4 divisors (see below), whose sum is σ = 12801204. Its totient is φ = 8534128.

The previous prime is 10667663. The next prime is 10667669. The reversal of 10667665 is 56676601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56676601 = 19 ⋅2982979.

It can be written as a sum of positive squares in 2 ways, for example, as 5363856 + 5303809 = 2316^2 + 2303^2 .

It is a cyclic number.

It is not a de Polignac number, because 10667665 - 2¹ = 10667663 is a prime.

It is a super-2 number, since 2×10667665² = 227598153104450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10667663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066762 + ... + 1066771.

It is an arithmetic number, because the mean of its divisors is an integer number (3200301).

Almost surely, 2^10667665 is an apocalyptic number.

It is an amenable number.

10667665 is a deficient number, since it is larger than the sum of its proper divisors (2133539).

10667665 is an equidigital number, since it uses as much as digits as its factorization.

10667665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133538.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 10667665 is about 3266.1391580886. The cubic root of 10667665 is about 220.1353505955.

The spelling of 10667665 in words is "ten million, six hundred sixty-seven thousand, six hundred sixty-five".