87645011 has 2 divisors, whose sum is σ = 87645012. Its totient is φ = 87645010.

The previous prime is 87645001. The next prime is 87645017. The reversal of 87645011 is 11054678.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87645011 - 2¹⁰ = 87643987 is a prime.

It is not a weakly prime, because it can be changed into another prime (87645017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43822505 + 43822506.

It is an arithmetic number, because the mean of its divisors is an integer number (43822506).

Almost surely, 2^87645011 is an apocalyptic number.

87645011 is a deficient number, since it is larger than the sum of its proper divisors (1).

87645011 is an equidigital number, since it uses as much as digits as its factorization.

87645011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 87645011 is about 9361.8914221433. The cubic root of 87645011 is about 444.1971147474.

Adding to 87645011 its reverse (11054678), we get a palindrome (98699689).

The spelling of 87645011 in words is "eighty-seven million, six hundred forty-five thousand, eleven".