20099707 has 8 divisors (see below), whose sum is σ = 20648880. Its totient is φ = 19557600.

The previous prime is 20099689. The next prime is 20099719. The reversal of 20099707 is 70799002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20099707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20093707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4273 + ... + 7645.

It is an arithmetic number, because the mean of its divisors is an integer number (2581110).

Almost surely, 2^20099707 is an apocalyptic number.

20099707 is a deficient number, since it is larger than the sum of its proper divisors (549173).

20099707 is a wasteful number, since it uses less digits than its factorization.

20099707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 20099707 is about 4483.2696773672. The cubic root of 20099707 is about 271.8920915313.

The spelling of 20099707 in words is "twenty million, ninety-nine thousand, seven hundred seven".