66534036 has 24 divisors (see below), whose sum is σ = 156673440. Its totient is φ = 21974112.

The previous prime is 66534011. The next prime is 66534059. The reversal of 66534036 is 63043566.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66533988 and 66534006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24126 + ... + 26741.

It is an arithmetic number, because the mean of its divisors is an integer number (6528060).

Almost surely, 2^66534036 is an apocalyptic number.

It is an amenable number.

66534036 is an abundant number, since it is smaller than the sum of its proper divisors (90139404).

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

66534036 is a wasteful number, since it uses less digits than its factorization.

66534036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50983 (or 50981 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 66534036 is about 8156.8398292476. The cubic root of 66534036 is about 405.2110590201.

The spelling of 66534036 in words is "sixty-six million, five hundred thirty-four thousand, thirty-six".