66539132 has 12 divisors (see below), whose sum is σ = 127029336. Its totient is φ = 30245040.

The previous prime is 66539129. The next prime is 66539147. The reversal of 66539132 is 23193566.

It is a junction number, because it is equal to n+sod(n) for n = 66539092 and 66539101.

It is a congruent number.

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, 756083 + ... + 756170.

It is an arithmetic number, because the mean of its divisors is an integer number (10585778).

Almost surely, 2^66539132 is an apocalyptic number.

It is an amenable number.

66539132 is a deficient number, since it is larger than the sum of its proper divisors (60490204).

66539132 is a wasteful number, since it uses less digits than its factorization.

66539132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512268 (or 1512266 counting only the distinct ones).

The product of its digits is 29160, while the sum is 35.

The square root of 66539132 is about 8157.1521991440. The cubic root of 66539132 is about 405.2214041155.

The spelling of 66539132 in words is "sixty-six million, five hundred thirty-nine thousand, one hundred thirty-two".