66372994 has 32 divisors (see below), whose sum is σ = 105431040. Its totient is φ = 31307472.

The previous prime is 66372983. The next prime is 66373019. The reversal of 66372994 is 49927366.

66372994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 522559 + ... + 522685.

It is an arithmetic number, because the mean of its divisors is an integer number (3294720).

Almost surely, 2^66372994 is an apocalyptic number.

66372994 is a deficient number, since it is larger than the sum of its proper divisors (39058046).

66372994 is a wasteful number, since it uses less digits than its factorization.

66372994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334.

The product of its digits is 489888, while the sum is 46.

The square root of 66372994 is about 8146.9622559577. The cubic root of 66372994 is about 404.8838644806.

The spelling of 66372994 in words is "sixty-six million, three hundred seventy-two thousand, nine hundred ninety-four".