66432968 has 64 divisors (see below), whose sum is σ = 155088000. Its totient is φ = 26030592.

The previous prime is 66432959. The next prime is 66433001. The reversal of 66432968 is 86923466.

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, 29780 + ... + 31932.

It is an arithmetic number, because the mean of its divisors is an integer number (2423250).

Almost surely, 2^66432968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66432968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77544000).

66432968 is an abundant number, since it is smaller than the sum of its proper divisors (88655032).

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

66432968 is a wasteful number, since it uses less digits than its factorization.

66432968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214 (or 2210 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 66432968 is about 8150.6421832884. The cubic root of 66432968 is about 405.0057774921.

The spelling of 66432968 in words is "sixty-six million, four hundred thirty-two thousand, nine hundred sixty-eight".