20693996 has 6 divisors (see below), whose sum is σ = 36214500. Its totient is φ = 10346996.

The previous prime is 20693993. The next prime is 20693999. The reversal of 20693996 is 69939602.

It is an interprime number because it is at equal distance from previous prime (20693993) and next prime (20693999).

It is not an unprimeable number, because it can be changed into a prime (20693993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2586746 + ... + 2586753.

It is an arithmetic number, because the mean of its divisors is an integer number (6035750).

Almost surely, 2^20693996 is an apocalyptic number.

It is an amenable number.

20693996 is a deficient number, since it is larger than the sum of its proper divisors (15520504).

20693996 is a wasteful number, since it uses less digits than its factorization.

20693996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173503 (or 5173501 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 20693996 is about 4549.0653985187. The cubic root of 20693996 is about 274.5457890466.

The spelling of 20693996 in words is "twenty million, six hundred ninety-three thousand, nine hundred ninety-six".