87786266 has 16 divisors (see below), whose sum is σ = 140356800. Its totient is φ = 41035200.

The previous prime is 87786247. The next prime is 87786287. The reversal of 87786266 is 66268778.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3416 + ... + 13683.

It is an arithmetic number, because the mean of its divisors is an integer number (8772300).

Almost surely, 2^87786266 is an apocalyptic number.

87786266 is a deficient number, since it is larger than the sum of its proper divisors (52570534).

87786266 is a wasteful number, since it uses less digits than its factorization.

87786266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17269.

The product of its digits is 1354752, while the sum is 50.

The square root of 87786266 is about 9369.4325335102. The cubic root of 87786266 is about 444.4356199961.

The spelling of 87786266 in words is "eighty-seven million, seven hundred eighty-six thousand, two hundred sixty-six".