87146 has 4 divisors (see below), whose sum is σ = 130722. Its totient is φ = 43572.

The previous prime is 87133. The next prime is 87149. The reversal of 87146 is 64178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64178 = 2 ⋅32089.

It can be written as a sum of positive squares in only one way, i.e., 87025 + 121 = 295^2 + 11^2 .

It is not an unprimeable number, because it can be changed into a prime (87149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21785 + ... + 21788.

2⁸⁷¹⁴⁶ is an apocalyptic number.

87146 is a deficient number, since it is larger than the sum of its proper divisors (43576).

87146 is a wasteful number, since it uses less digits than its factorization.

87146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43575.

The product of its digits is 1344, while the sum is 26.

The square root of 87146 is about 295.2050135076. The cubic root of 87146 is about 44.3352490677.

The spelling of 87146 in words is "eighty-seven thousand, one hundred forty-six".