66062217 has 16 divisors (see below), whose sum is σ = 95009600. Its totient is φ = 40588992.

The previous prime is 66062167. The next prime is 66062219. The reversal of 66062217 is 71226066.

It is not a de Polignac number, because 66062217 - 2¹⁶ = 65996681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66062219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38034 + ... + 39732.

It is an arithmetic number, because the mean of its divisors is an integer number (5938100).

Almost surely, 2^66062217 is an apocalyptic number.

It is an amenable number.

66062217 is a deficient number, since it is larger than the sum of its proper divisors (28947383).

66062217 is a wasteful number, since it uses less digits than its factorization.

66062217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2712.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 66062217 is about 8127.8666942809. The cubic root of 66062217 is about 404.2509489634.

The spelling of 66062217 in words is "sixty-six million, sixty-two thousand, two hundred seventeen".