66543462 has 48 divisors (see below), whose sum is σ = 152755200. Its totient is φ = 20891376.

The previous prime is 66543437. The next prime is 66543467. The reversal of 66543462 is 26434566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66543467) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 26539 + ... + 28937.

It is an arithmetic number, because the mean of its divisors is an integer number (3182400).

Almost surely, 2^66543462 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66543462, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76377600).

66543462 is an abundant number, since it is smaller than the sum of its proper divisors (86211738).

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

66543462 is a wasteful number, since it uses less digits than its factorization.

66543462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497 (or 2494 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 66543462 is about 8157.4176060810. The cubic root of 66543462 is about 405.2301937834.

The spelling of 66543462 in words is "sixty-six million, five hundred forty-three thousand, four hundred sixty-two".