66992946 has 8 divisors (see below), whose sum is σ = 133985904. Its totient is φ = 22330980.

The previous prime is 66992941. The next prime is 66992957. The reversal of 66992946 is 64929966.

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

66992946 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (66992941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5582740 + ... + 5582751.

It is an arithmetic number, because the mean of its divisors is an integer number (16748238).

Almost surely, 2^66992946 is an apocalyptic number.

66992946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66992946 is a wasteful number, since it uses less digits than its factorization.

66992946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11165496.

The product of its digits is 1259712, while the sum is 51.

The square root of 66992946 is about 8184.9218689002. The cubic root of 66992946 is about 406.1405557332.

The spelling of 66992946 in words is "sixty-six million, nine hundred ninety-two thousand, nine hundred forty-six".