66265670 has 16 divisors (see below), whose sum is σ = 119381040. Its totient is φ = 26483424.

The previous prime is 66265627. The next prime is 66265681. The reversal of 66265670 is 7656266.

66265670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66265670² = 8782278041097800, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 14144 + ... + 18236.

It is an arithmetic number, because the mean of its divisors is an integer number (7461315).

Almost surely, 2^66265670 is an apocalyptic number.

66265670 is a deficient number, since it is larger than the sum of its proper divisors (53115370).

66265670 is a wasteful number, since it uses less digits than its factorization.

66265670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5719.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 66265670 is about 8140.3728415841. The cubic root of 66265670 is about 404.6655166475.

The spelling of 66265670 in words is "sixty-six million, two hundred sixty-five thousand, six hundred seventy".