987654347 has 2 divisors, whose sum is σ = 987654348. Its totient is φ = 987654346.

The previous prime is 987654337. The next prime is 987654359. The reversal of 987654347 is 743456789.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 987654347 - 2¹⁰ = 987653323 is a prime.

It is a super-2 number, since 2×987654347² = 1950922218295992818, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (987654337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493827173 + 493827174.

It is an arithmetic number, because the mean of its divisors is an integer number (493827174).

Almost surely, 2^987654347 is an apocalyptic number.

987654347 is a deficient number, since it is larger than the sum of its proper divisors (1).

987654347 is an equidigital number, since it uses as much as digits as its factorization.

987654347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 53.

The square root of 987654347 is about 31426.9684665893. The cubic root of 987654347 is about 995.8677302000.

The spelling of 987654347 in words is "nine hundred eighty-seven million, six hundred fifty-four thousand, three hundred forty-seven".