671359920 has 320 divisors, whose sum is σ = 2748681216. Its totient is φ = 131235840.

The previous prime is 671359907. The next prime is 671359921. The reversal of 671359920 is 29953176.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (671359921) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 313092 + ... + 315228.

Almost surely, 2^671359920 is an apocalyptic number.

671359920 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 671359920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1374340608).

671359920 is an abundant number, since it is smaller than the sum of its proper divisors (2077321296).

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

671359920 is a wasteful number, since it uses less digits than its factorization.

671359920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188 (or 2182 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 42.

The square root of 671359920 is about 25910.6140413538. The cubic root of 671359920 is about 875.6256401689.

The spelling of 671359920 in words is "six hundred seventy-one million, three hundred fifty-nine thousand, nine hundred twenty".