66694334 has 16 divisors (see below), whose sum is σ = 114452448. Its totient is φ = 28553472.

The previous prime is 66694321. The next prime is 66694339. The reversal of 66694334 is 43349666.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66694291 and 66694300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66694339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16322 + ... + 19994.

It is an arithmetic number, because the mean of its divisors is an integer number (7153278).

Almost surely, 2^66694334 is an apocalyptic number.

66694334 is a deficient number, since it is larger than the sum of its proper divisors (47758114).

66694334 is a wasteful number, since it uses less digits than its factorization.

66694334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4979.

The product of its digits is 279936, while the sum is 41.

The square root of 66694334 is about 8166.6599047591. The cubic root of 66694334 is about 405.5362180503.

The spelling of 66694334 in words is "sixty-six million, six hundred ninety-four thousand, three hundred thirty-four".