66361722 has 16 divisors (see below), whose sum is σ = 151684032. Its totient is φ = 18960480.

The previous prime is 66361709. The next prime is 66361723. The reversal of 66361722 is 22716366.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (66361723) 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, 789979 + ... + 790062.

It is an arithmetic number, because the mean of its divisors is an integer number (9480252).

Almost surely, 2^66361722 is an apocalyptic number.

66361722 is an abundant number, since it is smaller than the sum of its proper divisors (85322310).

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

66361722 is a wasteful number, since it uses less digits than its factorization.

66361722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580053.

The product of its digits is 18144, while the sum is 33.

The square root of 66361722 is about 8146.2704349905. The cubic root of 66361722 is about 404.8609429628.

The spelling of 66361722 in words is "sixty-six million, three hundred sixty-one thousand, seven hundred twenty-two".