66432226 has 16 divisors (see below), whose sum is σ = 120583296. Its totient is φ = 26796096.

The previous prime is 66432221. The next prime is 66432229. The reversal of 66432226 is 62223466.

It is not an unprimeable number, because it can be changed into a prime (66432221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139326 + ... + 139801.

It is an arithmetic number, because the mean of its divisors is an integer number (7536456).

Almost surely, 2^66432226 is an apocalyptic number.

66432226 is a deficient number, since it is larger than the sum of its proper divisors (54151070).

66432226 is a wasteful number, since it uses less digits than its factorization.

66432226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279153.

The product of its digits is 20736, while the sum is 31.

The square root of 66432226 is about 8150.5966652755. The cubic root of 66432226 is about 405.0042696293.

The spelling of 66432226 in words is "sixty-six million, four hundred thirty-two thousand, two hundred twenty-six".