66151332 has 108 divisors (see below), whose sum is σ = 184648464. Its totient is φ = 19955520.

The previous prime is 66151321. The next prime is 66151333. The reversal of 66151332 is 23315166.

66151332 is a `hidden beast` number, since 6 + 615 + 13 + 32 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 66151296 and 66151305.

It is not an unprimeable number, because it can be changed into a prime (66151333) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 504907 + ... + 505037.

It is an arithmetic number, because the mean of its divisors is an integer number (1709708).

Almost surely, 2^66151332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66151332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92324232).

66151332 is an abundant number, since it is smaller than the sum of its proper divisors (118497132).

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

66151332 is a wasteful number, since it uses less digits than its factorization.

66151332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 232 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 66151332 is about 8133.3469125570. The cubic root of 66151332 is about 404.4326394892.

Adding to 66151332 its reverse (23315166), we get a palindrome (89466498).

The spelling of 66151332 in words is "sixty-six million, one hundred fifty-one thousand, three hundred thirty-two".