20896699 has 4 divisors (see below), whose sum is σ = 20910736. Its totient is φ = 20882664.

The previous prime is 20896693. The next prime is 20896721. The reversal of 20896699 is 99669802.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20896699 - 2⁷ = 20896571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20896693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4479 + ... + 7864.

It is an arithmetic number, because the mean of its divisors is an integer number (5227684).

Almost surely, 2^20896699 is an apocalyptic number.

20896699 is a deficient number, since it is larger than the sum of its proper divisors (14037).

20896699 is a wasteful number, since it uses less digits than its factorization.

20896699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14036.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 20896699 is about 4571.2907367613. The cubic root of 20896699 is about 275.4392934777.

The spelling of 20896699 in words is "twenty million, eight hundred ninety-six thousand, six hundred ninety-nine".