66094420 has 24 divisors (see below), whose sum is σ = 158626944. Its totient is φ = 22660896.

The previous prime is 66094403. The next prime is 66094421. The reversal of 66094420 is 2449066.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66094421) 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, 235912 + ... + 236191.

It is an arithmetic number, because the mean of its divisors is an integer number (6609456).

Almost surely, 2^66094420 is an apocalyptic number.

It is an amenable number.

66094420 is an abundant number, since it is smaller than the sum of its proper divisors (92532524).

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

66094420 is a wasteful number, since it uses less digits than its factorization.

66094420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472119 (or 472117 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 66094420 is about 8129.8474770441. The cubic root of 66094420 is about 404.3166243181.

The spelling of 66094420 in words is "sixty-six million, ninety-four thousand, four hundred twenty".