66022224 has 40 divisors (see below), whose sum is σ = 171134880. Its totient is φ = 21932928.

The previous prime is 66022211. The next prime is 66022273. The reversal of 66022224 is 42222066.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 66022194 and 66022203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13047 + ... + 17385.

It is an arithmetic number, because the mean of its divisors is an integer number (4278372).

Almost surely, 2^66022224 is an apocalyptic number.

It is an amenable number.

66022224 is an abundant number, since it is smaller than the sum of its proper divisors (105112656).

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

66022224 is a wasteful number, since it uses less digits than its factorization.

66022224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4667 (or 4661 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 66022224 is about 8125.4060821598. The cubic root of 66022224 is about 404.1693568296.

The spelling of 66022224 in words is "sixty-six million, twenty-two thousand, two hundred twenty-four".