66283470 has 192 divisors, whose sum is σ = 203793408. Its totient is φ = 14784000.

The previous prime is 66283463. The next prime is 66283471. The reversal of 66283470 is 7438266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66283471) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 933535 + ... + 933605.

It is an arithmetic number, because the mean of its divisors is an integer number (1061424).

Almost surely, 2^66283470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66283470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101896704).

66283470 is an abundant number, since it is smaller than the sum of its proper divisors (137509938).

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

66283470 is a wasteful number, since it uses less digits than its factorization.

66283470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 66283470 is about 8141.4660841890. The cubic root of 66283470 is about 404.7017465754.

The spelling of 66283470 in words is "sixty-six million, two hundred eighty-three thousand, four hundred seventy".