673869456 has 400 divisors, whose sum is σ = 2298852864. Its totient is φ = 188863488.

The previous prime is 673869439. The next prime is 673869457. The reversal of 673869456 is 654968376.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (6531840) is a multiple of the sum of its prime factors (140).

It is not an unprimeable number, because it can be changed into a prime (673869457) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 14337625 + ... + 14337671.

Almost surely, 2^673869456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673869456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149426432).

673869456 is an abundant number, since it is smaller than the sum of its proper divisors (1624983408).

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

673869456 is a wasteful number, since it uses less digits than its factorization.

673869456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 125 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The square root of 673869456 is about 25958.9956662426. The cubic root of 673869456 is about 876.7153099088.

The spelling of 673869456 in words is "six hundred seventy-three million, eight hundred sixty-nine thousand, four hundred fifty-six".