197047815 has 16 divisors (see below), whose sum is σ = 315476448. Its totient is φ = 105025536.

The previous prime is 197047793. The next prime is 197047817. The reversal of 197047815 is 518740791.

It is not a de Polignac number, because 197047815 - 2⁵ = 197047783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197047817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28587 + ... + 34803.

It is an arithmetic number, because the mean of its divisors is an integer number (19717278).

Almost surely, 2^197047815 is an apocalyptic number.

197047815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

197047815 is a deficient number, since it is larger than the sum of its proper divisors (118428633).

197047815 is a wasteful number, since it uses less digits than its factorization.

197047815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8338.

The product of its (nonzero) digits is 70560, while the sum is 42.

The square root of 197047815 is about 14037.3720831215. The cubic root of 197047815 is about 581.9118588549.

The spelling of 197047815 in words is "one hundred ninety-seven million, forty-seven thousand, eight hundred fifteen".