87197345 has 16 divisors (see below), whose sum is σ = 111177360. Its totient is φ = 65528064.

The previous prime is 87197323. The next prime is 87197353. The reversal of 87197345 is 54379178.

It can be written as a sum of positive squares in 8 ways, for example, as 6071296 + 81126049 = 2464^2 + 9007^2 .

It is a cyclic number.

It is not a de Polignac number, because 87197345 - 2⁶ = 87197281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87197296 and 87197305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2762 + ... + 13491.

It is an arithmetic number, because the mean of its divisors is an integer number (6948585).

Almost surely, 2^87197345 is an apocalyptic number.

It is an amenable number.

87197345 is a deficient number, since it is larger than the sum of its proper divisors (23980015).

87197345 is a wasteful number, since it uses less digits than its factorization.

87197345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16324.

The product of its digits is 211680, while the sum is 44.

The square root of 87197345 is about 9337.9518632300. The cubic root of 87197345 is about 443.4395455974.

The spelling of 87197345 in words is "eighty-seven million, one hundred ninety-seven thousand, three hundred forty-five".