66950051 has 8 divisors (see below), whose sum is σ = 77483520. Its totient is φ = 56658888.

The previous prime is 66950017. The next prime is 66950113. The reversal of 66950051 is 15005966.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66950051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66950251) 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 7 ways as a sum of consecutive naturals, for example, 59981 + ... + 61086.

It is an arithmetic number, because the mean of its divisors is an integer number (9685440).

Almost surely, 2^66950051 is an apocalyptic number.

66950051 is a deficient number, since it is larger than the sum of its proper divisors (10533469).

66950051 is a wasteful number, since it uses less digits than its factorization.

66950051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121153.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 66950051 is about 8182.3010822140. The cubic root of 66950051 is about 406.0538544721.

The spelling of 66950051 in words is "sixty-six million, nine hundred fifty thousand, fifty-one".