66926782 has 16 divisors (see below), whose sum is σ = 108686592. Its totient is φ = 30725280.

The previous prime is 66926779. The next prime is 66926789. The reversal of 66926782 is 28762966.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66926789) 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, 1773 + ... + 11704.

It is an arithmetic number, because the mean of its divisors is an integer number (6792912).

Almost surely, 2^66926782 is an apocalyptic number.

66926782 is a deficient number, since it is larger than the sum of its proper divisors (41759810).

66926782 is a wasteful number, since it uses less digits than its factorization.

66926782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13683.

The product of its digits is 435456, while the sum is 46.

The square root of 66926782 is about 8180.8790481219. The cubic root of 66926782 is about 406.0068066514.

The spelling of 66926782 in words is "sixty-six million, nine hundred twenty-six thousand, seven hundred eighty-two".