20966349 has 8 divisors (see below), whose sum is σ = 28123200. Its totient is φ = 13893536.

The previous prime is 20966279. The next prime is 20966357. The reversal of 20966349 is 94366902.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20966349 - 2⁸ = 20966093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20966369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20424 + ... + 21425.

It is an arithmetic number, because the mean of its divisors is an integer number (3515400).

Almost surely, 2^20966349 is an apocalyptic number.

It is an amenable number.

20966349 is a deficient number, since it is larger than the sum of its proper divisors (7156851).

20966349 is a wasteful number, since it uses less digits than its factorization.

20966349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42019.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 20966349 is about 4578.9025977848. The cubic root of 20966349 is about 275.7449728893.

The spelling of 20966349 in words is "twenty million, nine hundred sixty-six thousand, three hundred forty-nine".