66535074 has 32 divisors (see below), whose sum is σ = 155640000. Its totient is φ = 21010752.

The previous prime is 66535037. The next prime is 66535081. The reversal of 66535074 is 47053566.

It is a Curzon number.

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, 31399 + ... + 33450.

It is an arithmetic number, because the mean of its divisors is an integer number (4863750).

Almost surely, 2^66535074 is an apocalyptic number.

66535074 is an abundant number, since it is smaller than the sum of its proper divisors (89104926).

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

66535074 is a wasteful number, since it uses less digits than its factorization.

66535074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64879 (or 64873 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 66535074 is about 8156.9034565820. The cubic root of 66535074 is about 405.2131662468.

The spelling of 66535074 in words is "sixty-six million, five hundred thirty-five thousand, seventy-four".