1678997327 has 8 divisors (see below), whose sum is σ = 1920580896. Its totient is φ = 1437845472.

The previous prime is 1678997321. The next prime is 1678997329. The reversal of 1678997327 is 7237998761.

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

It is not a de Polignac number, because 1678997327 - 2¹² = 1678993231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678997321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99548 + ... + 115185.

It is an arithmetic number, because the mean of its divisors is an integer number (240072612).

Almost surely, 2^1678997327 is an apocalyptic number.

1678997327 is a deficient number, since it is larger than the sum of its proper divisors (241583569).

1678997327 is a wasteful number, since it uses less digits than its factorization.

1678997327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215857.

The product of its digits is 8001504, while the sum is 59.

The square root of 1678997327 is about 40975.5698801127. The cubic root of 1678997327 is about 1188.5478430879.

The spelling of 1678997327 in words is "one billion, six hundred seventy-eight million, nine hundred ninety-seven thousand, three hundred twenty-seven".