66535832 has 32 divisors (see below), whose sum is σ = 139000320. Its totient is φ = 29598240.

The previous prime is 66535823. The next prime is 66535873. The reversal of 66535832 is 23853566.

It is a happy number.

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, 3908 + ... + 12179.

It is an arithmetic number, because the mean of its divisors is an integer number (4343760).

Almost surely, 2^66535832 is an apocalyptic number.

It is an amenable number.

66535832 is an abundant number, since it is smaller than the sum of its proper divisors (72464488).

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

66535832 is a wasteful number, since it uses less digits than its factorization.

66535832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16151 (or 16147 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The square root of 66535832 is about 8156.9499201601. The cubic root of 66535832 is about 405.2147050363.

The spelling of 66535832 in words is "sixty-six million, five hundred thirty-five thousand, eight hundred thirty-two".