10066665 has 16 divisors (see below), whose sum is σ = 18407808. Its totient is φ = 4601856.

The previous prime is 10066631. The next prime is 10066681. The reversal of 10066665 is 56666001.

It is not a de Polignac number, because 10066665 - 2¹¹ = 10064617 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47832 + ... + 48041.

It is an arithmetic number, because the mean of its divisors is an integer number (1150488).

Almost surely, 2^10066665 is an apocalyptic number.

10066665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10066665 is a deficient number, since it is larger than the sum of its proper divisors (8341143).

10066665 is an equidigital number, since it uses as much as digits as its factorization.

10066665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95888.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 10066665 is about 3172.8008131618. The cubic root of 10066665 is about 215.9211603561.

It can be divided in two parts, 10066 and 665, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 10066665 in words is "ten million, sixty-six thousand, six hundred sixty-five".