66903782 has 16 divisors (see below), whose sum is σ = 109914192. Its totient is φ = 30289920.

The previous prime is 66903779. The next prime is 66903827. The reversal of 66903782 is 28730966.

It is a super-2 number, since 2×66903782² = 8952232091807048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263 + ... + 11570.

It is an arithmetic number, because the mean of its divisors is an integer number (6869637).

Almost surely, 2^66903782 is an apocalyptic number.

66903782 is a deficient number, since it is larger than the sum of its proper divisors (43010410).

66903782 is a wasteful number, since it uses less digits than its factorization.

66903782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12103.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 66903782 is about 8179.4732104213. The cubic root of 66903782 is about 405.9602920066.

The spelling of 66903782 in words is "sixty-six million, nine hundred three thousand, seven hundred eighty-two".