20966674 has 4 divisors (see below), whose sum is σ = 31450014. Its totient is φ = 10483336.

The previous prime is 20966663. The next prime is 20966689. The reversal of 20966674 is 47666902.

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., 20839225 + 127449 = 4565^2 + 357^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5241667 + ... + 5241670.

Almost surely, 2^20966674 is an apocalyptic number.

20966674 is a deficient number, since it is larger than the sum of its proper divisors (10483340).

20966674 is a wasteful number, since it uses less digits than its factorization.

20966674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10483339.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 20966674 is about 4578.9380865000. The cubic root of 20966674 is about 275.7463976589.

The spelling of 20966674 in words is "twenty million, nine hundred sixty-six thousand, six hundred seventy-four".