66432734 has 16 divisors (see below), whose sum is σ = 101189088. Its totient is φ = 32706912.

The previous prime is 66432733. The next prime is 66432749. The reversal of 66432734 is 43723466.

It is a junction number, because it is equal to n+sod(n) for n = 66432694 and 66432703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66432731) 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 7 ways as a sum of consecutive naturals, for example, 39764 + ... + 41400.

It is an arithmetic number, because the mean of its divisors is an integer number (6324318).

Almost surely, 2^66432734 is an apocalyptic number.

66432734 is a deficient number, since it is larger than the sum of its proper divisors (34756354).

66432734 is a wasteful number, since it uses less digits than its factorization.

66432734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939.

The product of its digits is 72576, while the sum is 35.

The square root of 66432734 is about 8150.6278285786. The cubic root of 66432734 is about 405.0053019679.

The spelling of 66432734 in words is "sixty-six million, four hundred thirty-two thousand, seven hundred thirty-four".