66427194 has 16 divisors (see below), whose sum is σ = 140669568. Its totient is φ = 20839872.

The previous prime is 66427183. The next prime is 66427199. The reversal of 66427194 is 49172466.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66427199) 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, 325522 + ... + 325725.

It is an arithmetic number, because the mean of its divisors is an integer number (8791848).

Almost surely, 2^66427194 is an apocalyptic number.

66427194 is an abundant number, since it is smaller than the sum of its proper divisors (74242374).

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

66427194 is a wasteful number, since it uses less digits than its factorization.

66427194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651269.

The product of its digits is 72576, while the sum is 39.

The square root of 66427194 is about 8150.2879703726. The cubic root of 66427194 is about 404.9940435033.

The spelling of 66427194 in words is "sixty-six million, four hundred twenty-seven thousand, one hundred ninety-four".