197061787 has 16 divisors (see below), whose sum is σ = 226240000. Its totient is φ = 170131104.

The previous prime is 197061743. The next prime is 197061797. The reversal of 197061787 is 787160791.

It is not a de Polignac number, because 197061787 - 2¹⁹ = 196537499 is a prime.

It is a Duffinian number.

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (197061727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14464 + ... + 24562.

It is an arithmetic number, because the mean of its divisors is an integer number (14140000).

Almost surely, 2^197061787 is an apocalyptic number.

197061787 is a deficient number, since it is larger than the sum of its proper divisors (29178213).

197061787 is a wasteful number, since it uses less digits than its factorization.

197061787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10210.

The product of its (nonzero) digits is 148176, while the sum is 46.

The square root of 197061787 is about 14037.8697457983. The cubic root of 197061787 is about 581.9256123362.

The spelling of 197061787 in words is "one hundred ninety-seven million, sixty-one thousand, seven hundred eighty-seven".