20715606 has 12 divisors (see below), whose sum is σ = 44883852. Its totient is φ = 6905196.

The previous prime is 20715589. The next prime is 20715623. The reversal of 20715606 is 60651702.

It is an interprime number because it is at equal distance from previous prime (20715589) and next prime (20715623).

It is a self number, because there is not a number n which added to its sum of digits gives 20715606.

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 5 ways as a sum of consecutive naturals, for example, 575416 + ... + 575451.

It is an arithmetic number, because the mean of its divisors is an integer number (3740321).

Almost surely, 2^20715606 is an apocalyptic number.

20715606 is an abundant number, since it is smaller than the sum of its proper divisors (24168246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20715606 is a wasteful number, since it uses less digits than its factorization.

20715606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150875 (or 1150872 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20715606 is about 4551.4399919146. The cubic root of 20715606 is about 274.6413219170.

It can be divided in two parts, 20715 and 606, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 20715606 in words is "twenty million, seven hundred fifteen thousand, six hundred six".