66956514 has 8 divisors (see below), whose sum is σ = 133913040. Its totient is φ = 22318836.

The previous prime is 66956507. The next prime is 66956531. The reversal of 66956514 is 41565966.

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

66956514 is an admirable number.

It is an unprimeable number.

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, 5579704 + ... + 5579715.

It is an arithmetic number, because the mean of its divisors is an integer number (16739130).

Almost surely, 2^66956514 is an apocalyptic number.

66956514 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.

66956514 is a wasteful number, since it uses less digits than its factorization.

66956514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11159424.

The product of its digits is 194400, while the sum is 42.

The square root of 66956514 is about 8182.6960104846. The cubic root of 66956514 is about 406.0669201411.

The spelling of 66956514 in words is "sixty-six million, nine hundred fifty-six thousand, five hundred fourteen".