72340066 has 8 divisors (see below), whose sum is σ = 114893100. Its totient is φ = 34042368.

The previous prime is 72340057. The next prime is 72340091. The reversal of 72340066 is 66004327.

It can be written as a sum of positive squares in 2 ways, for example, as 72335025 + 5041 = 8505^2 + 71^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063791 + ... + 1063858.

Almost surely, 2^72340066 is an apocalyptic number.

72340066 is a deficient number, since it is larger than the sum of its proper divisors (42553034).

72340066 is a wasteful number, since it uses less digits than its factorization.

72340066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127668.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 72340066 is about 8505.2963499222. The cubic root of 72340066 is about 416.6707044586.

The spelling of 72340066 in words is "seventy-two million, three hundred forty thousand, sixty-six".