87436766 has 4 divisors (see below), whose sum is σ = 131155152. Its totient is φ = 43718382.

The previous prime is 87436757. The next prime is 87436781. The reversal of 87436766 is 66763478.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66763478 = 2 ⋅33381739.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87436766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21859190 + ... + 21859193.

It is an arithmetic number, because the mean of its divisors is an integer number (32788788).

Almost surely, 2^87436766 is an apocalyptic number.

87436766 is a deficient number, since it is larger than the sum of its proper divisors (43718386).

87436766 is a wasteful number, since it uses less digits than its factorization.

87436766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43718385.

The product of its digits is 1016064, while the sum is 47.

The square root of 87436766 is about 9350.7628565802. The cubic root of 87436766 is about 443.8450308673.

The spelling of 87436766 in words is "eighty-seven million, four hundred thirty-six thousand, seven hundred sixty-six".