72066822 has 16 divisors (see below), whose sum is σ = 144426240. Its totient is φ = 23973512.

The previous prime is 72066809. The next prime is 72066823. The reversal of 72066822 is 22866027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72066823) 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, 8922 + ... + 14957.

It is an arithmetic number, because the mean of its divisors is an integer number (9026640).

Almost surely, 2^72066822 is an apocalyptic number.

72066822 is an abundant number, since it is smaller than the sum of its proper divisors (72359418).

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

72066822 is a wasteful number, since it uses less digits than its factorization.

72066822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24387.

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

The square root of 72066822 is about 8489.2179851857. The cubic root of 72066822 is about 416.1454242248.

It can be divided in two parts, 7206 and 6822, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 72066822 in words is "seventy-two million, sixty-six thousand, eight hundred twenty-two".