66733410 has 16 divisors (see below), whose sum is σ = 160160256. Its totient is φ = 17795568.

The previous prime is 66733409. The next prime is 66733441. The reversal of 66733410 is 1433766.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2224447 = 66733410 / (6 + 6 + 7 + 3 + 3 + 4 + 1 + 0).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1112194 + ... + 1112253.

It is an arithmetic number, because the mean of its divisors is an integer number (10010016).

Almost surely, 2^66733410 is an apocalyptic number.

66733410 is an abundant number, since it is smaller than the sum of its proper divisors (93426846).

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

66733410 is a wasteful number, since it uses less digits than its factorization.

66733410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224457.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 66733410 is about 8169.0519645795. The cubic root of 66733410 is about 405.6154033847.

The spelling of 66733410 in words is "sixty-six million, seven hundred thirty-three thousand, four hundred ten".