66495132 has 36 divisors (see below), whose sum is σ = 183366456. Its totient is φ = 20149920.

The previous prime is 66495131. The next prime is 66495133. The reversal of 66495132 is 23159466.

It is a happy number.

66495132 is a `hidden beast` number, since 6 + 649 + 5 + 1 + 3 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (66495131) and next prime (66495133).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66495131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83563 + ... + 84354.

Almost surely, 2^66495132 is an apocalyptic number.

It is an amenable number.

66495132 is an abundant number, since it is smaller than the sum of its proper divisors (116871324).

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

66495132 is a wasteful number, since it uses less digits than its factorization.

66495132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167938 (or 167933 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 66495132 is about 8154.4547334570. The cubic root of 66495132 is about 405.1320648412.

It can be divided in two parts, 6649 and 5132, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 66495132 in words is "sixty-six million, four hundred ninety-five thousand, one hundred thirty-two".