66022280 has 16 divisors (see below), whose sum is σ = 148550220. Its totient is φ = 26408896.

The previous prime is 66022273. The next prime is 66022301. The reversal of 66022280 is 8222066.

It can be written as a sum of positive squares in 2 ways, for example, as 55145476 + 10876804 = 7426^2 + 3298^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825239 + ... + 825318.

Almost surely, 2^66022280 is an apocalyptic number.

It is an amenable number.

66022280 is an abundant number, since it is smaller than the sum of its proper divisors (82527940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66022280 is a wasteful number, since it uses less digits than its factorization.

66022280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650568 (or 1650564 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 66022280 is about 8125.4095281407. The cubic root of 66022280 is about 404.1694711016.

The spelling of 66022280 in words is "sixty-six million, twenty-two thousand, two hundred eighty".