66094391 has 8 divisors (see below), whose sum is σ = 72176400. Its totient is φ = 60024640.

The previous prime is 66094373. The next prime is 66094403. The reversal of 66094391 is 19349066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66094391 - 2¹⁰ = 66093367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66094591) 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, 11075 + ... + 15963.

It is an arithmetic number, because the mean of its divisors is an integer number (9022050).

Almost surely, 2^66094391 is an apocalyptic number.

66094391 is a deficient number, since it is larger than the sum of its proper divisors (6082009).

66094391 is a wasteful number, since it uses less digits than its factorization.

66094391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6129.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 66094391 is about 8129.8456934926. The cubic root of 66094391 is about 404.3165651846.

The spelling of 66094391 in words is "sixty-six million, ninety-four thousand, three hundred ninety-one".