197115215 has 32 divisors (see below), whose sum is σ = 276825600. Its totient is φ = 133211520.

The previous prime is 197115211. The next prime is 197115239. The reversal of 197115215 is 512511791.

It is a happy number.

It is not a de Polignac number, because 197115215 - 2² = 197115211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197115211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53606 + ... + 57164.

It is an arithmetic number, because the mean of its divisors is an integer number (8650800).

Almost surely, 2^197115215 is an apocalyptic number.

197115215 is a deficient number, since it is larger than the sum of its proper divisors (79710385).

197115215 is a wasteful number, since it uses less digits than its factorization.

197115215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3647.

The product of its digits is 3150, while the sum is 32.

The square root of 197115215 is about 14039.7726121188. The cubic root of 197115215 is about 581.9781987401.

The spelling of 197115215 in words is "one hundred ninety-seven million, one hundred fifteen thousand, two hundred fifteen".