20614887 has 6 divisors (see below), whose sum is σ = 29777072. Its totient is φ = 13743252.

The previous prime is 20614873. The next prime is 20614903. The reversal of 20614887 is 78841602.

It is not a de Polignac number, because 20614887 - 2⁴ = 20614871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20614817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1145263 + ... + 1145280.

Almost surely, 2^20614887 is an apocalyptic number.

20614887 is a deficient number, since it is larger than the sum of its proper divisors (9162185).

20614887 is a wasteful number, since it uses less digits than its factorization.

20614887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290549 (or 2290546 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 20614887 is about 4540.3619899739. The cubic root of 20614887 is about 274.1954977898.

The spelling of 20614887 in words is "twenty million, six hundred fourteen thousand, eight hundred eighty-seven".