673401600 has 324 divisors, whose sum is σ = 2502497816. Its totient is φ = 179159040.

The previous prime is 673401593. The next prime is 673401649. The reversal of 673401600 is 6104376.

It is a tau number, because it is divible by the number of its divisors (324).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1554984 + ... + 1555416.

Almost surely, 2^673401600 is an apocalyptic number.

673401600 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 673401600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251248908).

673401600 is an abundant number, since it is smaller than the sum of its proper divisors (1829096216).

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

673401600 is an equidigital number, since it uses as much as digits as its factorization.

673401600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 673401600 is about 25949.9826589537. The cubic root of 673401600 is about 876.5123668031.

Adding to 673401600 its reverse (6104376), we get a palindrome (679505976).

The spelling of 673401600 in words is "six hundred seventy-three million, four hundred one thousand, six hundred".