72330166 has 4 divisors (see below), whose sum is σ = 108495252. Its totient is φ = 36165082.

The previous prime is 72330163. The next prime is 72330173. The reversal of 72330166 is 66103327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66103327 = 17 ⋅3888431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72330163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18082540 + ... + 18082543.

It is an arithmetic number, because the mean of its divisors is an integer number (27123813).

Almost surely, 2^72330166 is an apocalyptic number.

72330166 is a deficient number, since it is larger than the sum of its proper divisors (36165086).

72330166 is a wasteful number, since it uses less digits than its factorization.

72330166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36165085.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 72330166 is about 8504.7143397059. The cubic root of 72330166 is about 416.6516959599.

The spelling of 72330166 in words is "seventy-two million, three hundred thirty thousand, one hundred sixty-six".