84345287 has 8 divisors (see below), whose sum is σ = 91198800. Its totient is φ = 77544000.

The previous prime is 84345281. The next prime is 84345293. The reversal of 84345287 is 78254348.

It is an interprime number because it is at equal distance from previous prime (84345281) and next prime (84345293).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84345287 - 2⁴ = 84345271 is a prime.

It is a super-2 number, since 2×84345287² = 14228254878224738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84345281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9662 + ... + 16187.

It is an arithmetic number, because the mean of its divisors is an integer number (11399850).

Almost surely, 2^84345287 is an apocalyptic number.

84345287 is a deficient number, since it is larger than the sum of its proper divisors (6853513).

84345287 is a wasteful number, since it uses less digits than its factorization.

84345287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26113.

The product of its digits is 215040, while the sum is 41.

The square root of 84345287 is about 9183.9690221603. The cubic root of 84345287 is about 438.5511694492.

The spelling of 84345287 in words is "eighty-four million, three hundred forty-five thousand, two hundred eighty-seven".