671208480 has 144 divisors (see below), whose sum is σ = 2369629080. Its totient is φ = 172806144.

The previous prime is 671208469. The next prime is 671208481. The reversal of 671208480 is 84802176.

671208480 = T₂₅ + T₂₆ + ... + T₁₅₉₀.

It can be written as a sum of positive squares in 4 ways, for example, as 441504144 + 229704336 = 21012^2 + 15156^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (671208481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33724 + ... + 49796.

Almost surely, 2^671208480 is an apocalyptic number.

671208480 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 671208480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1184814540).

671208480 is an abundant number, since it is smaller than the sum of its proper divisors (1698420600).

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

671208480 is a wasteful number, since it uses less digits than its factorization.

671208480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16123 (or 16112 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 671208480 is about 25907.6915220172. The cubic root of 671208480 is about 875.5597963421.

The spelling of 671208480 in words is "six hundred seventy-one million, two hundred eight thousand, four hundred eighty".