82345987 has 2 divisors, whose sum is σ = 82345988. Its totient is φ = 82345986.

The previous prime is 82345973. The next prime is 82345997. The reversal of 82345987 is 78954328.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82345987 - 2⁷ = 82345859 is a prime.

It is not a weakly prime, because it can be changed into another prime (82345997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41172993 + 41172994.

It is an arithmetic number, because the mean of its divisors is an integer number (41172994).

Almost surely, 2^82345987 is an apocalyptic number.

82345987 is a deficient number, since it is larger than the sum of its proper divisors (1).

82345987 is an equidigital number, since it uses as much as digits as its factorization.

82345987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 46.

The square root of 82345987 is about 9074.4689651792. The cubic root of 82345987 is about 435.0583213300.

The spelling of 82345987 in words is "eighty-two million, three hundred forty-five thousand, nine hundred eighty-seven".