66152322 has 32 divisors (see below), whose sum is σ = 148392000. Its totient is φ = 21844692.

The previous prime is 66152299. The next prime is 66152323. The reversal of 66152322 is 22325166.

66152322 is a `hidden beast` number, since 6 + 615 + 23 + 22 = 666.

It is a super-2 number, since 2×66152322² = 8752259411983368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (66152323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618193 + ... + 618299.

It is an arithmetic number, because the mean of its divisors is an integer number (4637250).

Almost surely, 2^66152322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66152322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74196000).

66152322 is an abundant number, since it is smaller than the sum of its proper divisors (82239678).

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

66152322 is an frugal number, since it uses more digits than its factorization.

66152322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 112 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 66152322 is about 8133.4077728834. The cubic root of 66152322 is about 404.4346570163.

Adding to 66152322 its reverse (22325166), we get a palindrome (88477488).

The spelling of 66152322 in words is "sixty-six million, one hundred fifty-two thousand, three hundred twenty-two".