87206863 has 2 divisors, whose sum is σ = 87206864. Its totient is φ = 87206862.

The previous prime is 87206849. The next prime is 87206887. The reversal of 87206863 is 36860278.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87206863 - 2⁹ = 87206351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87206803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43603431 + 43603432.

It is an arithmetic number, because the mean of its divisors is an integer number (43603432).

Almost surely, 2^87206863 is an apocalyptic number.

87206863 is a deficient number, since it is larger than the sum of its proper divisors (1).

87206863 is an equidigital number, since it uses as much as digits as its factorization.

87206863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 87206863 is about 9338.4614899886. The cubic root of 87206863 is about 443.4556795139.

The spelling of 87206863 in words is "eighty-seven million, two hundred six thousand, eight hundred sixty-three".