66346051 has 4 divisors (see below), whose sum is σ = 66631032. Its totient is φ = 66061072.

The previous prime is 66346039. The next prime is 66346057. The reversal of 66346051 is 15064366.

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-66346051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66346057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142141 + ... + 142606.

It is an arithmetic number, because the mean of its divisors is an integer number (16657758).

Almost surely, 2^66346051 is an apocalyptic number.

66346051 is a deficient number, since it is larger than the sum of its proper divisors (284981).

66346051 is a wasteful number, since it uses less digits than its factorization.

66346051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284980.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 66346051 is about 8145.3085269988. The cubic root of 66346051 is about 404.8290718021.

The spelling of 66346051 in words is "sixty-six million, three hundred forty-six thousand, fifty-one".