197056655 has 4 divisors (see below), whose sum is σ = 236467992. Its totient is φ = 157645320.

The previous prime is 197056621. The next prime is 197056669. The reversal of 197056655 is 556650791.

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

It is not a de Polignac number, because 197056655 - 2⁸ = 197056399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19705661 + ... + 19705670.

It is an arithmetic number, because the mean of its divisors is an integer number (59116998).

Almost surely, 2^197056655 is an apocalyptic number.

197056655 is a deficient number, since it is larger than the sum of its proper divisors (39411337).

197056655 is an equidigital number, since it uses as much as digits as its factorization.

197056655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39411336.

The product of its (nonzero) digits is 283500, while the sum is 44.

The square root of 197056655 is about 14037.6869533410. The cubic root of 197056655 is about 581.9205606749.

The spelling of 197056655 in words is "one hundred ninety-seven million, fifty-six thousand, six hundred fifty-five".