20777006 has 8 divisors (see below), whose sum is σ = 32170944. Its totient is φ = 10053360.

The previous prime is 20776997. The next prime is 20777023. The reversal of 20777006 is 60077702.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20777006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167495 + ... + 167618.

It is an arithmetic number, because the mean of its divisors is an integer number (4021368).

Almost surely, 2^20777006 is an apocalyptic number.

20777006 is a deficient number, since it is larger than the sum of its proper divisors (11393938).

20777006 is a wasteful number, since it uses less digits than its factorization.

20777006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335146.

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 20777006 is about 4558.1801193020. The cubic root of 20777006 is about 274.9123952358.

The spelling of 20777006 in words is "twenty million, seven hundred seventy-seven thousand, six".