671454420 has 192 divisors, whose sum is σ = 2389180416. Its totient is φ = 137064960.

The previous prime is 671454419. The next prime is 671454431. The reversal of 671454420 is 24454176.

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 63 ways as a sum of consecutive naturals, for example, 167277 + ... + 171243.

It is an arithmetic number, because the mean of its divisors is an integer number (12443648).

Almost surely, 2^671454420 is an apocalyptic number.

671454420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671454420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1194590208).

671454420 is an abundant number, since it is smaller than the sum of its proper divisors (1717725996).

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

671454420 is a wasteful number, since it uses less digits than its factorization.

671454420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4030 (or 4028 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 671454420 is about 25912.4375541939. The cubic root of 671454420 is about 875.6667223258. Note that the first 3 decimals are identical.

The spelling of 671454420 in words is "six hundred seventy-one million, four hundred fifty-four thousand, four hundred twenty".