197320977 has 24 divisors (see below), whose sum is σ = 328236480. Its totient is φ = 111889440.

The previous prime is 197320931. The next prime is 197320997. The reversal of 197320977 is 779023791.

It is not a de Polignac number, because 197320977 - 2¹⁰ = 197319953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197320997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3702 + ... + 20207.

It is an arithmetic number, because the mean of its divisors is an integer number (13676520).

Almost surely, 2^197320977 is an apocalyptic number.

It is an amenable number.

197320977 is a deficient number, since it is larger than the sum of its proper divisors (130915503).

197320977 is a wasteful number, since it uses less digits than its factorization.

197320977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24053 (or 24050 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 45.

The square root of 197320977 is about 14047.0985260302. The cubic root of 197320977 is about 582.1806308641.

The spelling of 197320977 in words is "one hundred ninety-seven million, three hundred twenty thousand, nine hundred seventy-seven".