20968654 has 16 divisors (see below), whose sum is σ = 36403200. Its totient is φ = 8872344.

The previous prime is 20968613. The next prime is 20968693. The reversal of 20968654 is 45686902.

It is a happy number.

It is a super-3 number, since 3×20968654³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8374 + ... + 10585.

It is an arithmetic number, because the mean of its divisors is an integer number (2275200).

Almost surely, 2^20968654 is an apocalyptic number.

20968654 is a deficient number, since it is larger than the sum of its proper divisors (15434546).

20968654 is a wasteful number, since it uses less digits than its factorization.

20968654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19047.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 20968654 is about 4579.1542887306. The cubic root of 20968654 is about 275.7550774759.

The spelling of 20968654 in words is "twenty million, nine hundred sixty-eight thousand, six hundred fifty-four".