20694699 has 12 divisors (see below), whose sum is σ = 30014712. Its totient is φ = 13740000.

The previous prime is 20694691. The next prime is 20694703. The reversal of 20694699 is 99649602.

It is not a de Polignac number, because 20694699 - 2³ = 20694691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20694691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2322 + ... + 6839.

It is an arithmetic number, because the mean of its divisors is an integer number (2501226).

Almost surely, 2^20694699 is an apocalyptic number.

20694699 is a deficient number, since it is larger than the sum of its proper divisors (9320013).

20694699 is a wasteful number, since it uses less digits than its factorization.

20694699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9418 (or 9415 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 20694699 is about 4549.1426664812. The cubic root of 20694699 is about 274.5488978952.

The spelling of 20694699 in words is "twenty million, six hundred ninety-four thousand, six hundred ninety-nine".