20602197 has 72 divisors (see below), whose sum is σ = 39267072. Its totient is φ = 10281600.

The previous prime is 20602189. The next prime is 20602207. The reversal of 20602197 is 79120602.

It is not a de Polignac number, because 20602197 - 2³ = 20602189 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20602197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20602157) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 150313 + ... + 150449.

It is an arithmetic number, because the mean of its divisors is an integer number (545376).

Almost surely, 2^20602197 is an apocalyptic number.

It is an amenable number.

20602197 is a deficient number, since it is larger than the sum of its proper divisors (18664875).

20602197 is a wasteful number, since it uses less digits than its factorization.

20602197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 20602197 is about 4538.9643091789. The cubic root of 20602197 is about 274.1392236502.

Adding to 20602197 its reverse (79120602), we get a palindrome (99722799).

The spelling of 20602197 in words is "twenty million, six hundred two thousand, one hundred ninety-seven".