20864614 has 4 divisors (see below), whose sum is σ = 31296924. Its totient is φ = 10432306.

The previous prime is 20864609. The next prime is 20864617. The reversal of 20864614 is 41646802.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20864617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5216152 + ... + 5216155.

It is an arithmetic number, because the mean of its divisors is an integer number (7824231).

Almost surely, 2^20864614 is an apocalyptic number.

20864614 is a deficient number, since it is larger than the sum of its proper divisors (10432310).

20864614 is a wasteful number, since it uses less digits than its factorization.

20864614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10432309.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 20864614 is about 4567.7799859450. The cubic root of 20864614 is about 275.2982505209.

The spelling of 20864614 in words is "twenty million, eight hundred sixty-four thousand, six hundred fourteen".