671049678 has 16 divisors (see below), whose sum is σ = 1445337936. Its totient is φ = 206476800.

The previous prime is 671049677. The next prime is 671049683. The reversal of 671049678 is 876940176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671049677) 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, 4301523 + ... + 4301678.

It is an arithmetic number, because the mean of its divisors is an integer number (90333621).

Almost surely, 2^671049678 is an apocalyptic number.

671049678 is an abundant number, since it is smaller than the sum of its proper divisors (774288258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671049678 is a wasteful number, since it uses less digits than its factorization.

671049678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8603219.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 671049678 is about 25904.6265751892. The cubic root of 671049678 is about 875.4907409901.

The spelling of 671049678 in words is "six hundred seventy-one million, forty-nine thousand, six hundred seventy-eight".