66213334 has 32 divisors (see below), whose sum is σ = 118444032. Its totient is φ = 27408000.

The previous prime is 66213311. The next prime is 66213361. The reversal of 66213334 is 43331266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8739 + ... + 14449.

It is an arithmetic number, because the mean of its divisors is an integer number (3701376).

Almost surely, 2^66213334 is an apocalyptic number.

66213334 is a deficient number, since it is larger than the sum of its proper divisors (52230698).

66213334 is a wasteful number, since it uses less digits than its factorization.

66213334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772.

The product of its digits is 7776, while the sum is 28.

The square root of 66213334 is about 8137.1576118446. The cubic root of 66213334 is about 404.5589549216.

The spelling of 66213334 in words is "sixty-six million, two hundred thirteen thousand, three hundred thirty-four".