20695018 has 8 divisors (see below), whose sum is σ = 32868612. Its totient is φ = 9738816.

The previous prime is 20694983. The next prime is 20695021. The reversal of 20695018 is 81059602.

It can be written as a sum of positive squares in 2 ways, for example, as 20638849 + 56169 = 4543^2 + 237^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304305 + ... + 304372.

Almost surely, 2^20695018 is an apocalyptic number.

20695018 is a deficient number, since it is larger than the sum of its proper divisors (12173594).

20695018 is a wasteful number, since it uses less digits than its factorization.

20695018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608696.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 20695018 is about 4549.1777278976. The cubic root of 20695018 is about 274.5503085729.

The spelling of 20695018 in words is "twenty million, six hundred ninety-five thousand, eighteen".