66677794 has 8 divisors (see below), whose sum is σ = 100804608. Its totient is φ = 33076260.

The previous prime is 66677789. The next prime is 66677813. The reversal of 66677794 is 49777666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131002 + ... + 131509.

It is an arithmetic number, because the mean of its divisors is an integer number (12600576).

Almost surely, 2^66677794 is an apocalyptic number.

66677794 is a deficient number, since it is larger than the sum of its proper divisors (34126814).

66677794 is a wasteful number, since it uses less digits than its factorization.

66677794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262640.

The product of its digits is 2667168, while the sum is 52.

The square root of 66677794 is about 8165.6471880678. The cubic root of 66677794 is about 405.5026913462.

The spelling of 66677794 in words is "sixty-six million, six hundred seventy-seven thousand, seven hundred ninety-four".