87283906 has 4 divisors (see below), whose sum is σ = 130925862. Its totient is φ = 43641952.

The previous prime is 87283901. The next prime is 87283907. The reversal of 87283906 is 60938278.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60938278 = 2 ⋅30469139.

It can be written as a sum of positive squares in only one way, i.e., 49350625 + 37933281 = 7025^2 + 6159^2 .

It is not an unprimeable number, because it can be changed into a prime (87283901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21820975 + ... + 21820978.

Almost surely, 2^87283906 is an apocalyptic number.

87283906 is a deficient number, since it is larger than the sum of its proper divisors (43641956).

87283906 is a wasteful number, since it uses less digits than its factorization.

87283906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43641955.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 87283906 is about 9342.5856164126. The cubic root of 87283906 is about 443.5862315469.

The spelling of 87283906 in words is "eighty-seven million, two hundred eighty-three thousand, nine hundred six".