19700197 has 8 divisors (see below), whose sum is σ = 21602592. Its totient is φ = 17816400.

The previous prime is 19700171. The next prime is 19700209. The reversal of 19700197 is 79100791.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 19700197 - 2⁷ = 19700069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19700137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2379 + ... + 6712.

It is an arithmetic number, because the mean of its divisors is an integer number (2700324).

Almost surely, 2^19700197 is an apocalyptic number.

It is an amenable number.

19700197 is a deficient number, since it is larger than the sum of its proper divisors (1902395).

19700197 is a wasteful number, since it uses less digits than its factorization.

19700197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9299.

The product of its (nonzero) digits is 3969, while the sum is 34.

The square root of 19700197 is about 4438.4903965200. The cubic root of 19700197 is about 270.0786099410.

It can be divided in two parts, 19700 and 197, that multiplied together give a square (3880900 = 1970²).

The spelling of 19700197 in words is "nineteen million, seven hundred thousand, one hundred ninety-seven".