671854134 has 32 divisors (see below), whose sum is σ = 1585207296. Its totient is φ = 185765760.

The previous prime is 671854097. The next prime is 671854153. The reversal of 671854134 is 431458176.

It is a junction number, because it is equal to n+sod(n) for n = 671854092 and 671854101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256707 + ... + 259310.

It is an arithmetic number, because the mean of its divisors is an integer number (49537728).

Almost surely, 2^671854134 is an apocalyptic number.

671854134 is an abundant number, since it is smaller than the sum of its proper divisors (913353162).

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

671854134 is a wasteful number, since it uses less digits than its factorization.

671854134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516060.

The product of its digits is 80640, while the sum is 39.

The square root of 671854134 is about 25920.1491893855. The cubic root of 671854134 is about 875.8404481000.

The spelling of 671854134 in words is "six hundred seventy-one million, eight hundred fifty-four thousand, one hundred thirty-four".