672744450 has 96 divisors (see below), whose sum is σ = 1913877504. Its totient is φ = 153195840.

The previous prime is 672744437. The next prime is 672744463. The reversal of 672744450 is 54447276.

It is an interprime number because it is at equal distance from previous prime (672744437) and next prime (672744463).

It is a junction number, because it is equal to n+sod(n) for n = 672744399 and 672744408.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 321307 + ... + 323393.

It is an arithmetic number, because the mean of its divisors is an integer number (19936224).

Almost surely, 2^672744450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672744450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (956938752).

672744450 is an abundant number, since it is smaller than the sum of its proper divisors (1241133054).

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

672744450 is a wasteful number, since it uses less digits than its factorization.

672744450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416 (or 2411 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 39.

The square root of 672744450 is about 25937.3177102028. The cubic root of 672744450 is about 876.2271543484.

The spelling of 672744450 in words is "six hundred seventy-two million, seven hundred forty-four thousand, four hundred fifty".