66022782 has 32 divisors (see below), whose sum is σ = 151828992. Its totient is φ = 18748704.

The previous prime is 66022771. The next prime is 66022799. The reversal of 66022782 is 28722066.

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, 2308 + ... + 11720.

It is an arithmetic number, because the mean of its divisors is an integer number (4744656).

Almost surely, 2^66022782 is an apocalyptic number.

66022782 is an abundant number, since it is smaller than the sum of its proper divisors (85806210).

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

66022782 is a wasteful number, since it uses less digits than its factorization.

66022782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9592.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 66022782 is about 8125.4404188327. The cubic root of 66022782 is about 404.1704954657.

The spelling of 66022782 in words is "sixty-six million, twenty-two thousand, seven hundred eighty-two".