87207266 has 4 divisors (see below), whose sum is σ = 130810902. Its totient is φ = 43603632.

The previous prime is 87207259. The next prime is 87207269. The reversal of 87207266 is 66270278.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 79727041 + 7480225 = 8929^2 + 2735^2 .

It is not an unprimeable number, because it can be changed into a prime (87207269) by changing a digit.

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 as a sum of consecutive naturals, namely, 21801815 + ... + 21801818.

Almost surely, 2^87207266 is an apocalyptic number.

87207266 is a deficient number, since it is larger than the sum of its proper divisors (43603636).

87207266 is a wasteful number, since it uses less digits than its factorization.

87207266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43603635.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 87207266 is about 9338.4830673938. The cubic root of 87207266 is about 443.4563626113.

The spelling of 87207266 in words is "eighty-seven million, two hundred seven thousand, two hundred sixty-six".