66705832 has 16 divisors (see below), whose sum is σ = 125185140. Its totient is φ = 33323136.

The previous prime is 66705823. The next prime is 66705869. The reversal of 66705832 is 23850766.

It can be written as a sum of positive squares in 2 ways, for example, as 46867716 + 19838116 = 6846^2 + 4454^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66705791 and 66705800.

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, 7948 + ... + 14020.

Almost surely, 2^66705832 is an apocalyptic number.

It is an amenable number.

66705832 is a deficient number, since it is larger than the sum of its proper divisors (58479308).

66705832 is a wasteful number, since it uses less digits than its factorization.

66705832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7452 (or 7448 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 66705832 is about 8167.3638341879. The cubic root of 66705832 is about 405.5595213168.

The spelling of 66705832 in words is "sixty-six million, seven hundred five thousand, eight hundred thirty-two".