66284794 has 4 divisors (see below), whose sum is σ = 99427194. Its totient is φ = 33142396.

The previous prime is 66284773. The next prime is 66284839. The reversal of 66284794 is 49748266.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 43388569 + 22896225 = 6587^2 + 4785^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16571197 + ... + 16571200.

Almost surely, 2^66284794 is an apocalyptic number.

66284794 is a deficient number, since it is larger than the sum of its proper divisors (33142400).

66284794 is a wasteful number, since it uses less digits than its factorization.

66284794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33142399.

The product of its digits is 580608, while the sum is 46.

The square root of 66284794 is about 8141.5473959193. The cubic root of 66284794 is about 404.7044411715.

The spelling of 66284794 in words is "sixty-six million, two hundred eighty-four thousand, seven hundred ninety-four".