671393454 has 16 divisors (see below), whose sum is σ = 1356631248. Its totient is φ = 221490432.

The previous prime is 671393447. The next prime is 671393467. The reversal of 671393454 is 454393176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576217 + ... + 577380.

It is an arithmetic number, because the mean of its divisors is an integer number (84789453).

Almost surely, 2^671393454 is an apocalyptic number.

671393454 is an abundant number, since it is smaller than the sum of its proper divisors (685237794).

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

671393454 is a wasteful number, since it uses less digits than its factorization.

671393454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153699.

The product of its digits is 272160, while the sum is 42.

The square root of 671393454 is about 25911.2611425998. The cubic root of 671393454 is about 875.6402189070.

The spelling of 671393454 in words is "six hundred seventy-one million, three hundred ninety-three thousand, four hundred fifty-four".