197707146 has 64 divisors (see below), whose sum is σ = 491812608. Its totient is φ = 51591168.

The previous prime is 197707129. The next prime is 197707177. The reversal of 197707146 is 641707791.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 197707098 and 197707107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51096 + ... + 54828.

It is an arithmetic number, because the mean of its divisors is an integer number (7684572).

Almost surely, 2^197707146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197707146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245906304).

197707146 is an abundant number, since it is smaller than the sum of its proper divisors (294105462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197707146 is a wasteful number, since it uses less digits than its factorization.

197707146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3855.

The product of its (nonzero) digits is 74088, while the sum is 42.

The square root of 197707146 is about 14060.8373150392. The cubic root of 197707146 is about 582.5601708613.

The spelling of 197707146 in words is "one hundred ninety-seven million, seven hundred seven thousand, one hundred forty-six".