197870 has 16 divisors (see below), whose sum is σ = 364608. Its totient is φ = 77280.

The previous prime is 197837. The next prime is 197887. The reversal of 197870 is 78791.

197870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260 + ... + 680.

It is an arithmetic number, because the mean of its divisors is an integer number (22788).

2¹⁹⁷⁸⁷⁰ is an apocalyptic number.

197870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197870 is a deficient number, since it is larger than the sum of its proper divisors (166738).

197870 is a wasteful number, since it uses less digits than its factorization.

197870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 197870 is about 444.8258086038. The cubic root of 197870 is about 58.2720081144.

It can be divided in two parts, 1978 and 70, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 197870 in words is "one hundred ninety-seven thousand, eight hundred seventy".