197020623 has 4 divisors (see below), whose sum is σ = 262694168. Its totient is φ = 131347080.

The previous prime is 197020619. The next prime is 197020631. The reversal of 197020623 is 326020791.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 197020623 - 2² = 197020619 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 (197020613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32836768 + ... + 32836773.

It is an arithmetic number, because the mean of its divisors is an integer number (65673542).

Almost surely, 2^197020623 is an apocalyptic number.

197020623 is a deficient number, since it is larger than the sum of its proper divisors (65673545).

197020623 is an equidigital number, since it uses as much as digits as its factorization.

197020623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65673544.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 197020623 is about 14036.4034923480. The cubic root of 197020623 is about 581.8850902671.

The spelling of 197020623 in words is "one hundred ninety-seven million, twenty thousand, six hundred twenty-three".