66969704 has 32 divisors (see below), whose sum is σ = 131111400. Its totient is φ = 32037120.

The previous prime is 66969677. The next prime is 66969713. The reversal of 66969704 is 40796966.

It can be written as a sum of positive squares in 4 ways, for example, as 46267204 + 20702500 = 6802^2 + 4550^2 .

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, 16202 + ... + 19910.

Almost surely, 2^66969704 is an apocalyptic number.

It is an amenable number.

66969704 is a deficient number, since it is larger than the sum of its proper divisors (64141696).

66969704 is a wasteful number, since it uses less digits than its factorization.

66969704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813 (or 3809 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 66969704 is about 8183.5019398788. The cubic root of 66969704 is about 406.0935825756.

The spelling of 66969704 in words is "sixty-six million, nine hundred sixty-nine thousand, seven hundred four".