66932250 has 256 divisors, whose sum is σ = 222842880. Its totient is φ = 12960000.

The previous prime is 66932249. The next prime is 66932251. The reversal of 66932250 is 5223966.

It is an interprime number because it is at equal distance from previous prime (66932249) and next prime (66932251).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66932251) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1097220 + ... + 1097280.

It is an arithmetic number, because the mean of its divisors is an integer number (870480).

Almost surely, 2^66932250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66932250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111421440).

66932250 is an abundant number, since it is smaller than the sum of its proper divisors (155910630).

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

66932250 is a wasteful number, since it uses less digits than its factorization.

66932250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 66932250 is about 8181.2132352115. The cubic root of 66932250 is about 406.0178634346.

The spelling of 66932250 in words is "sixty-six million, nine hundred thirty-two thousand, two hundred fifty".