673780416 has 56 divisors (see below), whose sum is σ = 1824191424. Its totient is φ = 219367680.

The previous prime is 673780411. The next prime is 673780417. The reversal of 673780416 is 614087376.

It is not an unprimeable number, because it can be changed into a prime (673780411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32550 + ... + 49061.

Almost surely, 2^673780416 is an apocalyptic number.

It is an amenable number.

673780416 is an abundant number, since it is smaller than the sum of its proper divisors (1150411008).

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

673780416 is a wasteful number, since it uses less digits than its factorization.

673780416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81669 (or 81659 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 673780416 is about 25957.2805971658. The cubic root of 673780416 is about 876.6766940370.

It can be divided in two parts, 6737 and 80416, that added together give a triangular number (87153 = T₄₁₇).

The spelling of 673780416 in words is "six hundred seventy-three million, seven hundred eighty thousand, four hundred sixteen".