72276066 has 24 divisors (see below), whose sum is σ = 161650944. Its totient is φ = 23314680.

The previous prime is 72276023. The next prime is 72276067. The reversal of 72276066 is 66067227.

It is a self number, because there is not a number n which added to its sum of digits gives 72276066.

It is not an unprimeable number, because it can be changed into a prime (72276067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64206 + ... + 65321.

It is an arithmetic number, because the mean of its divisors is an integer number (6735456).

Almost surely, 2^72276066 is an apocalyptic number.

72276066 is an abundant number, since it is smaller than the sum of its proper divisors (89374878).

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

72276066 is a wasteful number, since it uses less digits than its factorization.

72276066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129566 (or 129563 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 72276066 is about 8501.5331558490. The cubic root of 72276066 is about 416.5477905853.

The spelling of 72276066 in words is "seventy-two million, two hundred seventy-six thousand, sixty-six".