66211258 has 8 divisors (see below), whose sum is σ = 100513728. Its totient is φ = 32706684.

The previous prime is 66211253. The next prime is 66211259. The reversal of 66211258 is 85211266.

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

It is not an unprimeable number, because it can be changed into a prime (66211253) 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, 199266 + ... + 199597.

It is an arithmetic number, because the mean of its divisors is an integer number (12564216).

Almost surely, 2^66211258 is an apocalyptic number.

66211258 is a deficient number, since it is larger than the sum of its proper divisors (34302470).

66211258 is a wasteful number, since it uses less digits than its factorization.

66211258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398948.

The product of its digits is 5760, while the sum is 31.

The square root of 66211258 is about 8137.0300478737. The cubic root of 66211258 is about 404.5547268046.

The spelling of 66211258 in words is "sixty-six million, two hundred eleven thousand, two hundred fifty-eight".