66934560 has 192 divisors, whose sum is σ = 263015424. Its totient is φ = 13900800.

The previous prime is 66934547. The next prime is 66934583. The reversal of 66934560 is 6543966.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36055 + ... + 37865.

It is an arithmetic number, because the mean of its divisors is an integer number (1369872).

Almost surely, 2^66934560 is an apocalyptic number.

66934560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66934560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131507712).

66934560 is an abundant number, since it is smaller than the sum of its proper divisors (196080864).

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

66934560 is a wasteful number, since it uses less digits than its factorization.

66934560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847 (or 1839 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 66934560 is about 8181.3544110984. The cubic root of 66934560 is about 406.0225342795.

The spelling of 66934560 in words is "sixty-six million, nine hundred thirty-four thousand, five hundred sixty".