66064951 has 4 divisors (see below), whose sum is σ = 66100000. Its totient is φ = 66029904.

The previous prime is 66064931. The next prime is 66064963. The reversal of 66064951 is 15946066.

66064951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66064951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66064951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66064931) by changing a digit.

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, 14526 + ... + 18523.

It is an arithmetic number, because the mean of its divisors is an integer number (16525000).

Almost surely, 2^66064951 is an apocalyptic number.

66064951 is a deficient number, since it is larger than the sum of its proper divisors (35049).

66064951 is a wasteful number, since it uses less digits than its factorization.

66064951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35048.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 66064951 is about 8128.0348793543. The cubic root of 66064951 is about 404.2565255592.

The spelling of 66064951 in words is "sixty-six million, sixty-four thousand, nine hundred fifty-one".