66768582 has 32 divisors (see below), whose sum is σ = 138870144. Its totient is φ = 21384000.

The previous prime is 66768553. The next prime is 66768607. The reversal of 66768582 is 28586766.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14457 + ... + 18507.

It is an arithmetic number, because the mean of its divisors is an integer number (4339692).

Almost surely, 2^66768582 is an apocalyptic number.

66768582 is an abundant number, since it is smaller than the sum of its proper divisors (72101562).

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

66768582 is a wasteful number, since it uses less digits than its factorization.

66768582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164.

The product of its digits is 967680, while the sum is 48.

The square root of 66768582 is about 8171.2044399831. The cubic root of 66768582 is about 405.6866510518.

The spelling of 66768582 in words is "sixty-six million, seven hundred sixty-eight thousand, five hundred eighty-two".