66159426 has 8 divisors (see below), whose sum is σ = 132318864. Its totient is φ = 22053140.

The previous prime is 66159371. The next prime is 66159439. The reversal of 66159426 is 62495166.

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

66159426 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5513280 + ... + 5513291.

It is an arithmetic number, because the mean of its divisors is an integer number (16539858).

Almost surely, 2^66159426 is an apocalyptic number.

66159426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66159426 is a wasteful number, since it uses less digits than its factorization.

66159426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11026576.

The product of its digits is 77760, while the sum is 39.

The square root of 66159426 is about 8133.8444784739. The cubic root of 66159426 is about 404.4491337112.

The spelling of 66159426 in words is "sixty-six million, one hundred fifty-nine thousand, four hundred twenty-six".