66704434 has 4 divisors (see below), whose sum is σ = 100056654. Its totient is φ = 33352216.

The previous prime is 66704423. The next prime is 66704441. The reversal of 66704434 is 43440766.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58599025 + 8105409 = 7655^2 + 2847^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66704434.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16676107 + ... + 16676110.

Almost surely, 2^66704434 is an apocalyptic number.

66704434 is a deficient number, since it is larger than the sum of its proper divisors (33352220).

66704434 is a wasteful number, since it uses less digits than its factorization.

66704434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33352219.

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 66704434 is about 8167.2782492089. The cubic root of 66704434 is about 405.5566881004.

The spelling of 66704434 in words is "sixty-six million, seven hundred four thousand, four hundred thirty-four".