87243659 has 2 divisors, whose sum is σ = 87243660. Its totient is φ = 87243658.

The previous prime is 87243619. The next prime is 87243683. The reversal of 87243659 is 95634278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87243659 - 2²⁴ = 70466443 is a prime.

It is a super-2 number, since 2×87243659² = 15222912071416562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87243619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43621829 + 43621830.

It is an arithmetic number, because the mean of its divisors is an integer number (43621830).

Almost surely, 2^87243659 is an apocalyptic number.

87243659 is a deficient number, since it is larger than the sum of its proper divisors (1).

87243659 is an equidigital number, since it uses as much as digits as its factorization.

87243659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 87243659 is about 9340.4314140194. The cubic root of 87243659 is about 443.5180411988.

The spelling of 87243659 in words is "eighty-seven million, two hundred forty-three thousand, six hundred fifty-nine".