66426536 has 32 divisors (see below), whose sum is σ = 136231200. Its totient is φ = 30114240.

The previous prime is 66426491. The next prime is 66426551. The reversal of 66426536 is 63562466.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 66426536.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44051 + ... + 45533.

It is an arithmetic number, because the mean of its divisors is an integer number (4257225).

Almost surely, 2^66426536 is an apocalyptic number.

It is an amenable number.

66426536 is an abundant number, since it is smaller than the sum of its proper divisors (69804664).

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

66426536 is a wasteful number, since it uses less digits than its factorization.

66426536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009 (or 2005 counting only the distinct ones).

The product of its digits is 155520, while the sum is 38.

The square root of 66426536 is about 8150.2476036008. The cubic root of 66426536 is about 404.9927062650.

The spelling of 66426536 in words is "sixty-six million, four hundred twenty-six thousand, five hundred thirty-six".