66359694 has 16 divisors (see below), whose sum is σ = 132815232. Its totient is φ = 22103928.

The previous prime is 66359663. The next prime is 66359717. The reversal of 66359694 is 49695366.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7597 + ... + 13799.

It is an arithmetic number, because the mean of its divisors is an integer number (8300952).

Almost surely, 2^66359694 is an apocalyptic number.

66359694 is an abundant number, since it is smaller than the sum of its proper divisors (66455538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66359694 is a wasteful number, since it uses less digits than its factorization.

66359694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7991.

The product of its digits is 1049760, while the sum is 48.

The square root of 66359694 is about 8146.1459599003. The cubic root of 66359694 is about 404.8568187662.

The spelling of 66359694 in words is "sixty-six million, three hundred fifty-nine thousand, six hundred ninety-four".