87176745 has 12 divisors (see below), whose sum is σ = 151106436. Its totient is φ = 46494240.

The previous prime is 87176741. The next prime is 87176767. The reversal of 87176745 is 54767178.

It can be written as a sum of positive squares in 2 ways, for example, as 16818201 + 70358544 = 4101^2 + 8388^2 .

It is not a de Polignac number, because 87176745 - 2² = 87176741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1937261 = 87176745 / (8 + 7 + 1 + 7 + 6 + 7 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 87176745.

It is not an unprimeable number, because it can be changed into a prime (87176741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 968586 + ... + 968675.

It is an arithmetic number, because the mean of its divisors is an integer number (12592203).

Almost surely, 2^87176745 is an apocalyptic number.

It is an amenable number.

87176745 is a deficient number, since it is larger than the sum of its proper divisors (63929691).

87176745 is a wasteful number, since it uses less digits than its factorization.

87176745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937272 (or 1937269 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The square root of 87176745 is about 9336.8487724714. The cubic root of 87176745 is about 443.4046226148.

The spelling of 87176745 in words is "eighty-seven million, one hundred seventy-six thousand, seven hundred forty-five".