66022972 has 24 divisors (see below), whose sum is σ = 120960000. Its totient is φ = 31472496.

The previous prime is 66022969. The next prime is 66022973. The reversal of 66022972 is 27922066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66022973) 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, 32029 + ... + 34027.

It is an arithmetic number, because the mean of its divisors is an integer number (5040000).

Almost surely, 2^66022972 is an apocalyptic number.

It is an amenable number.

66022972 is a deficient number, since it is larger than the sum of its proper divisors (54937028).

66022972 is a wasteful number, since it uses less digits than its factorization.

66022972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385 (or 2383 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 66022972 is about 8125.4521104982. The cubic root of 66022972 is about 404.1708831718.

It can be divided in two parts, 660 and 22972, that added together give a palindrome (23632).

The spelling of 66022972 in words is "sixty-six million, twenty-two thousand, nine hundred seventy-two".