66256337 has 8 divisors (see below), whose sum is σ = 75900672. Its totient is φ = 56656800.

The previous prime is 66256301. The next prime is 66256339. The reversal of 66256337 is 73365266.

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 66256337 - 2¹⁸ = 65994193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66256337.

It is not an unprimeable number, because it can be changed into a prime (66256339) 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, 7964 + ... + 13997.

It is an arithmetic number, because the mean of its divisors is an integer number (9487584).

Almost surely, 2^66256337 is an apocalyptic number.

It is an amenable number.

66256337 is a deficient number, since it is larger than the sum of its proper divisors (9644335).

66256337 is a wasteful number, since it uses less digits than its factorization.

66256337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22399.

The product of its digits is 136080, while the sum is 38.

The square root of 66256337 is about 8139.7995675569. The cubic root of 66256337 is about 404.6465177672.

The spelling of 66256337 in words is "sixty-six million, two hundred fifty-six thousand, three hundred thirty-seven".