87023623 has 2 divisors, whose sum is σ = 87023624. Its totient is φ = 87023622.

The previous prime is 87023621. The next prime is 87023639. The reversal of 87023623 is 32632078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87023623 - 2¹ = 87023621 is a prime.

It is a super-2 number, since 2×87023623² = 15146221920092258, which contains 22 as substring.

Together with 87023621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87023621) 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, 43511811 + 43511812.

It is an arithmetic number, because the mean of its divisors is an integer number (43511812).

Almost surely, 2^87023623 is an apocalyptic number.

87023623 is a deficient number, since it is larger than the sum of its proper divisors (1).

87023623 is an equidigital number, since it uses as much as digits as its factorization.

87023623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 87023623 is about 9328.6452928601. The cubic root of 87023623 is about 443.1448637653.

The spelling of 87023623 in words is "eighty-seven million, twenty-three thousand, six hundred twenty-three".