66536368 has 20 divisors (see below), whose sum is σ = 136497960. Its totient is φ = 31311104.

The previous prime is 66536329. The next prime is 66536383. The reversal of 66536368 is 86363566.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122038 + ... + 122581.

It is an arithmetic number, because the mean of its divisors is an integer number (6824898).

Almost surely, 2^66536368 is an apocalyptic number.

66536368 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

66536368 is an abundant number, since it is smaller than the sum of its proper divisors (69961592).

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

66536368 is a wasteful number, since it uses less digits than its factorization.

66536368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244644 (or 244638 counting only the distinct ones).

The product of its digits is 466560, while the sum is 43.

The square root of 66536368 is about 8156.9827755120. The cubic root of 66536368 is about 405.2157931442.

The spelling of 66536368 in words is "sixty-six million, five hundred thirty-six thousand, three hundred sixty-eight".