66681062 has 48 divisors (see below), whose sum is σ = 122923008. Its totient is φ = 27009360.

The previous prime is 66681061. The next prime is 66681073. The reversal of 66681062 is 26018666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66681061) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 142553 + ... + 143019.

It is an arithmetic number, because the mean of its divisors is an integer number (2560896).

Almost surely, 2^66681062 is an apocalyptic number.

66681062 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

66681062 is a deficient number, since it is larger than the sum of its proper divisors (56241946).

66681062 is a wasteful number, since it uses less digits than its factorization.

66681062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 66681062 is about 8165.8472922288. The cubic root of 66681062 is about 405.5093160462.

The spelling of 66681062 in words is "sixty-six million, six hundred eighty-one thousand, sixty-two".