20700099 has 36 divisors (see below), whose sum is σ = 35313096. Its totient is φ = 11648448.

The previous prime is 20700083. The next prime is 20700103. The reversal of 20700099 is 99000702.

It is not a de Polignac number, because 20700099 - 2⁴ = 20700083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20700049) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 31872 + ... + 32514.

Almost surely, 2^20700099 is an apocalyptic number.

20700099 is a deficient number, since it is larger than the sum of its proper divisors (14612997).

20700099 is a wasteful number, since it uses less digits than its factorization.

20700099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 20700099 is about 4549.7361461957. The cubic root of 20700099 is about 274.5727757510.

The spelling of 20700099 in words is "twenty million, seven hundred thousand, ninety-nine".