197877970 has 32 divisors (see below), whose sum is σ = 391236480. Its totient is φ = 71723520.

The previous prime is 197877949. The next prime is 197877971. The reversal of 197877970 is 79778791.

197877970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×197877970² = 78311382022641800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (197877971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18271 + ... + 27010.

It is an arithmetic number, because the mean of its divisors is an integer number (12226140).

Almost surely, 2^197877970 is an apocalyptic number.

197877970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197877970 is a deficient number, since it is larger than the sum of its proper divisors (193358510).

197877970 is a wasteful number, since it uses less digits than its factorization.

197877970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45330.

The product of its (nonzero) digits is 1555848, while the sum is 55.

The square root of 197877970 is about 14066.9104639221. The cubic root of 197877970 is about 582.7279048273.

The spelling of 197877970 in words is "one hundred ninety-seven million, eight hundred seventy-seven thousand, nine hundred seventy".