678012671 has 8 divisors (see below), whose sum is σ = 780447360. Its totient is φ = 576971928.

The previous prime is 678012611. The next prime is 678012703. The reversal of 678012671 is 176210876.

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 678012671 - 2¹⁰ = 678011647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678012611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347441 + ... + 349386.

It is an arithmetic number, because the mean of its divisors is an integer number (97555920).

Almost surely, 2^678012671 is an apocalyptic number.

678012671 is a deficient number, since it is larger than the sum of its proper divisors (102434689).

678012671 is a wasteful number, since it uses less digits than its factorization.

678012671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696973.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 678012671 is about 26038.6764448579. The cubic root of 678012671 is about 878.5084370488.

The spelling of 678012671 in words is "six hundred seventy-eight million, twelve thousand, six hundred seventy-one".