66064051 has 4 divisors (see below), whose sum is σ = 66969112. Its totient is φ = 65158992.

The previous prime is 66064049. The next prime is 66064087. The reversal of 66064051 is 15046066.

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

It is a cyclic number.

It is not a de Polignac number, because 66064051 - 2¹ = 66064049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66064451) 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, 452421 + ... + 452566.

It is an arithmetic number, because the mean of its divisors is an integer number (16742278).

Almost surely, 2^66064051 is an apocalyptic number.

66064051 is a deficient number, since it is larger than the sum of its proper divisors (905061).

66064051 is an equidigital number, since it uses as much as digits as its factorization.

66064051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905060.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 66064051 is about 8127.9795152301. The cubic root of 66064051 is about 404.2546898278.

The spelling of 66064051 in words is "sixty-six million, sixty-four thousand, fifty-one".