87345169 has 4 divisors (see below), whose sum is σ = 89376496. Its totient is φ = 85313844.

The previous prime is 87345151. The next prime is 87345173. The reversal of 87345169 is 96154378.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87345169 is a prime.

It is a super-2 number, since 2×87345169² = 15258357095277122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 2031283 = 87345169 / (8 + 7 + 3 + 4 + 5 + 1 + 6 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87345149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015599 + ... + 1015684.

It is an arithmetic number, because the mean of its divisors is an integer number (22344124).

Almost surely, 2^87345169 is an apocalyptic number.

It is an amenable number.

87345169 is a deficient number, since it is larger than the sum of its proper divisors (2031327).

87345169 is a wasteful number, since it uses less digits than its factorization.

87345169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031326.

The product of its digits is 181440, while the sum is 43.

The square root of 87345169 is about 9345.8637375044. The cubic root of 87345169 is about 443.6899890017.

The spelling of 87345169 in words is "eighty-seven million, three hundred forty-five thousand, one hundred sixty-nine".