8772145 has 8 divisors (see below), whose sum is σ = 10811304. Its totient is φ = 6827904.

The previous prime is 8772139. The next prime is 8772149. The reversal of 8772145 is 5412778.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 954529 + 7817616 = 977^2 + 2796^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8772145 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 8772145.

It is not an unprimeable number, because it can be changed into a prime (8772149) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23524 + ... + 23893.

It is an arithmetic number, because the mean of its divisors is an integer number (1351413).

Almost surely, 2^8772145 is an apocalyptic number.

It is an amenable number.

8772145 is a deficient number, since it is larger than the sum of its proper divisors (2039159).

8772145 is a wasteful number, since it uses less digits than its factorization.

8772145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47459.

The product of its digits is 15680, while the sum is 34.

The square root of 8772145 is about 2961.7807143676. The cubic root of 8772145 is about 206.2379582807.

The spelling of 8772145 in words is "eight million, seven hundred seventy-two thousand, one hundred forty-five".