66783030 has 32 divisors (see below), whose sum is σ = 167249664. Its totient is φ = 17034336.

The previous prime is 66783029. The next prime is 66783049. The reversal of 66783030 is 3038766.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66782982 and 66783000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47704 + ... + 49083.

It is an arithmetic number, because the mean of its divisors is an integer number (5226552).

Almost surely, 2^66783030 is an apocalyptic number.

66783030 is an abundant number, since it is smaller than the sum of its proper divisors (100466634).

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

66783030 is a wasteful number, since it uses less digits than its factorization.

66783030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96820.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 66783030 is about 8172.0884723552. The cubic root of 66783030 is about 405.7159110112.

The spelling of 66783030 in words is "sixty-six million, seven hundred eighty-three thousand, thirty".