66394108 has 48 divisors (see below), whose sum is σ = 133428960. Its totient is φ = 28627200.

The previous prime is 66394103. The next prime is 66394117. The reversal of 66394108 is 80149366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66394103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77410 + ... + 78262.

It is an arithmetic number, because the mean of its divisors is an integer number (2779770).

Almost surely, 2^66394108 is an apocalyptic number.

It is an amenable number.

66394108 is an abundant number, since it is smaller than the sum of its proper divisors (67034852).

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

66394108 is a wasteful number, since it uses less digits than its factorization.

66394108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 66394108 is about 8148.2579733339. The cubic root of 66394108 is about 404.9267926410.

The spelling of 66394108 in words is "sixty-six million, three hundred ninety-four thousand, one hundred eight".