66734674 has 8 divisors (see below), whose sum is σ = 100166220. Its totient is φ = 33345936.

The previous prime is 66734663. The next prime is 66734683. The reversal of 66734674 is 47643766.

It can be written as a sum of positive squares in 2 ways, for example, as 66536649 + 198025 = 8157^2 + 445^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66734674.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6469 + ... + 13240.

Almost surely, 2^66734674 is an apocalyptic number.

66734674 is a deficient number, since it is larger than the sum of its proper divisors (33431546).

66734674 is a wasteful number, since it uses less digits than its factorization.

66734674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21404.

The product of its digits is 508032, while the sum is 43.

The square root of 66734674 is about 8169.1293293716. The cubic root of 66734674 is about 405.6179642940.

It can be divided in two parts, 66 and 734674, that multiplied together give a palindrome (48488484).

The spelling of 66734674 in words is "sixty-six million, seven hundred thirty-four thousand, six hundred seventy-four".