671494350 has 48 divisors (see below), whose sum is σ = 1672540272. Its totient is φ = 178287360.

The previous prime is 671494309. The next prime is 671494381. The reversal of 671494350 is 53494176.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 671494299 and 671494308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25344 + ... + 44556.

It is an arithmetic number, because the mean of its divisors is an integer number (34844589).

Almost surely, 2^671494350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671494350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (836270136).

671494350 is an abundant number, since it is smaller than the sum of its proper divisors (1001045922).

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

671494350 is a wasteful number, since it uses less digits than its factorization.

671494350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19461 (or 19456 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 671494350 is about 25913.2080221651. The cubic root of 671494350 is about 875.6840800089.

The spelling of 671494350 in words is "six hundred seventy-one million, four hundred ninety-four thousand, three hundred fifty".