20012699 has 16 divisors (see below), whose sum is σ = 23579136. Its totient is φ = 16632000.

The previous prime is 20012687. The next prime is 20012743. The reversal of 20012699 is 99621002.

It is not a de Polignac number, because 20012699 - 2⁴ = 20012683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20012609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32999 + ... + 33599.

It is an arithmetic number, because the mean of its divisors is an integer number (1473696).

Almost surely, 2^20012699 is an apocalyptic number.

20012699 is a deficient number, since it is larger than the sum of its proper divisors (3566437).

20012699 is an equidigital number, since it uses as much as digits as its factorization.

20012699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 20012699 is about 4473.5555210593. Note that the first 4 decimals coincide. The cubic root of 20012699 is about 271.4992001532.

The spelling of 20012699 in words is "twenty million, twelve thousand, six hundred ninety-nine".