66534237 has 32 divisors (see below), whose sum is σ = 122895360. Its totient is φ = 34562160.

The previous prime is 66534227. The next prime is 66534253. The reversal of 66534237 is 73243566.

It is not a de Polignac number, because 66534237 - 2¹¹ = 66532189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66534227) 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 31 ways as a sum of consecutive naturals, for example, 13923 + ... + 18080.

It is an arithmetic number, because the mean of its divisors is an integer number (3840480).

Almost surely, 2^66534237 is an apocalyptic number.

It is an amenable number.

66534237 is a deficient number, since it is larger than the sum of its proper divisors (56361123).

66534237 is a wasteful number, since it uses less digits than its factorization.

66534237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32030 (or 32024 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 66534237 is about 8156.8521501864. The cubic root of 66534237 is about 405.2114670686.

The spelling of 66534237 in words is "sixty-six million, five hundred thirty-four thousand, two hundred thirty-seven".