87224811 has 4 divisors (see below), whose sum is σ = 116299752. Its totient is φ = 58149872.

The previous prime is 87224791. The next prime is 87224827. The reversal of 87224811 is 11842278.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87224811 - 2⁶ = 87224747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87224861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14537466 + ... + 14537471.

It is an arithmetic number, because the mean of its divisors is an integer number (29074938).

Almost surely, 2^87224811 is an apocalyptic number.

87224811 is a deficient number, since it is larger than the sum of its proper divisors (29074941).

87224811 is a wasteful number, since it uses less digits than its factorization.

87224811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29074940.

The product of its digits is 7168, while the sum is 33.

The square root of 87224811 is about 9339.4224125478. The cubic root of 87224811 is about 443.4860998894.

The spelling of 87224811 in words is "eighty-seven million, two hundred twenty-four thousand, eight hundred eleven".