87538966 has 32 divisors (see below), whose sum is σ = 148181760. Its totient is φ = 38576736.

The previous prime is 87538963. The next prime is 87538981. The reversal of 87538966 is 66983578.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87538963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30985 + ... + 33691.

It is an arithmetic number, because the mean of its divisors is an integer number (4630680).

Almost surely, 2^87538966 is an apocalyptic number.

87538966 is a deficient number, since it is larger than the sum of its proper divisors (60642794).

87538966 is a wasteful number, since it uses less digits than its factorization.

87538966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788.

The product of its digits is 2177280, while the sum is 52.

The square root of 87538966 is about 9356.2260554136. The cubic root of 87538966 is about 444.0178921719.

The spelling of 87538966 in words is "eighty-seven million, five hundred thirty-eight thousand, nine hundred sixty-six".