87651066 has 16 divisors (see below), whose sum is σ = 184528800. Its totient is φ = 27679248.

The previous prime is 87651023. The next prime is 87651089. The reversal of 87651066 is 66015678.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384321 + ... + 384548.

It is an arithmetic number, because the mean of its divisors is an integer number (11533050).

Almost surely, 2^87651066 is an apocalyptic number.

87651066 is an abundant number, since it is smaller than the sum of its proper divisors (96877734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87651066 is a wasteful number, since it uses less digits than its factorization.

87651066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768893.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 87651066 is about 9362.2148020647. The cubic root of 87651066 is about 444.2073437061.

The spelling of 87651066 in words is "eighty-seven million, six hundred fifty-one thousand, sixty-six".