678273081 has 8 divisors (see below), whose sum is σ = 904903200. Its totient is φ = 451912512.

The previous prime is 678273061. The next prime is 678273097. The reversal of 678273081 is 180372876.

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

It is not a de Polignac number, because 678273081 - 2¹⁴ = 678256697 is a prime.

It is a super-2 number, since 2×678273081² = 920108744818465122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (678273031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61440 + ... + 71633.

It is an arithmetic number, because the mean of its divisors is an integer number (113112900).

Almost surely, 2^678273081 is an apocalyptic number.

It is an amenable number.

678273081 is a deficient number, since it is larger than the sum of its proper divisors (226630119).

678273081 is a wasteful number, since it uses less digits than its factorization.

678273081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134775.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 678273081 is about 26043.6764109831. The cubic root of 678273081 is about 878.6208946814.

The spelling of 678273081 in words is "six hundred seventy-eight million, two hundred seventy-three thousand, eighty-one".