20496797 has 4 divisors (see below), whose sum is σ = 21158016. Its totient is φ = 19835580.

The previous prime is 20496769. The next prime is 20496803. The reversal of 20496797 is 79769402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20496797 - 2⁶ = 20496733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20496727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330563 + ... + 330624.

It is an arithmetic number, because the mean of its divisors is an integer number (5289504).

Almost surely, 2^20496797 is an apocalyptic number.

It is an amenable number.

20496797 is a deficient number, since it is larger than the sum of its proper divisors (661219).

20496797 is an equidigital number, since it uses as much as digits as its factorization.

20496797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661218.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 20496797 is about 4527.3388430733. The cubic root of 20496797 is about 273.6709291171.

The spelling of 20496797 in words is "twenty million, four hundred ninety-six thousand, seven hundred ninety-seven".