678252041 has 8 divisors (see below), whose sum is σ = 682110720. Its totient is φ = 674403328.

The previous prime is 678252031. The next prime is 678252061. The reversal of 678252041 is 140252876.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-678252041 is a prime.

It is a super-2 number, since 2×678252041² = 920051662241331362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 678251992 and 678252010.

It is not an unprimeable number, because it can be changed into a prime (678252031) 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, 164240 + ... + 168318.

It is an arithmetic number, because the mean of its divisors is an integer number (85263840).

Almost surely, 2^678252041 is an apocalyptic number.

It is an amenable number.

678252041 is a deficient number, since it is larger than the sum of its proper divisors (3858679).

678252041 is a wasteful number, since it uses less digits than its factorization.

678252041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4983.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 678252041 is about 26043.2724710241. The cubic root of 678252041 is about 878.6118096608.

The spelling of 678252041 in words is "six hundred seventy-eight million, two hundred fifty-two thousand, forty-one".