87951666 has 32 divisors (see below), whose sum is σ = 192269376. Its totient is φ = 26600000.

The previous prime is 87951653. The next prime is 87951667. The reversal of 87951666 is 66615978.

It is not an unprimeable number, because it can be changed into a prime (87951667) 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, 45316 + ... + 47216.

It is an arithmetic number, because the mean of its divisors is an integer number (6008418).

Almost surely, 2^87951666 is an apocalyptic number.

87951666 is an abundant number, since it is smaller than the sum of its proper divisors (104317710).

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

87951666 is a wasteful number, since it uses less digits than its factorization.

87951666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2618.

The product of its digits is 544320, while the sum is 48.

The square root of 87951666 is about 9378.2549549476. The cubic root of 87951666 is about 444.7145684623.

The spelling of 87951666 in words is "eighty-seven million, nine hundred fifty-one thousand, six hundred sixty-six".