20774666 has 16 divisors (see below), whose sum is σ = 34090848. Its totient is φ = 9416400.

The previous prime is 20774653. The next prime is 20774683. The reversal of 20774666 is 66647702.

It is a happy number.

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, 8141 + ... + 10383.

It is an arithmetic number, because the mean of its divisors is an integer number (2130678).

Almost surely, 2^20774666 is an apocalyptic number.

20774666 is a deficient number, since it is larger than the sum of its proper divisors (13316182).

20774666 is a wasteful number, since it uses less digits than its factorization.

20774666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 20774666 is about 4557.9234306864. The cubic root of 20774666 is about 274.9020742243.

The spelling of 20774666 in words is "twenty million, seven hundred seventy-four thousand, six hundred sixty-six".