66046813 has 8 divisors (see below), whose sum is σ = 77522432. Its totient is φ = 55081296.

The previous prime is 66046807. The next prime is 66046837. The reversal of 66046813 is 31864066.

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

It is a cyclic number.

It is not a de Polignac number, because 66046813 - 2⁹ = 66046301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66046913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127245 + ... + 127762.

It is an arithmetic number, because the mean of its divisors is an integer number (9690304).

Almost surely, 2^66046813 is an apocalyptic number.

It is an amenable number.

66046813 is a deficient number, since it is larger than the sum of its proper divisors (11475619).

66046813 is a wasteful number, since it uses less digits than its factorization.

66046813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255051.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 66046813 is about 8126.9190349111. The cubic root of 66046813 is about 404.2195262331.

The spelling of 66046813 in words is "sixty-six million, forty-six thousand, eight hundred thirteen".