87641023 has 2 divisors, whose sum is σ = 87641024. Its totient is φ = 87641022.

The previous prime is 87641003. The next prime is 87641027. The reversal of 87641023 is 32014678.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87641023 - 2⁵ = 87640991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87641027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43820511 + 43820512.

It is an arithmetic number, because the mean of its divisors is an integer number (43820512).

Almost surely, 2^87641023 is an apocalyptic number.

87641023 is a deficient number, since it is larger than the sum of its proper divisors (1).

87641023 is an equidigital number, since it uses as much as digits as its factorization.

87641023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 87641023 is about 9361.6784285725. The cubic root of 87641023 is about 444.1903773988.

The spelling of 87641023 in words is "eighty-seven million, six hundred forty-one thousand, twenty-three".