673840872 has 48 divisors (see below), whose sum is σ = 1826793540. Its totient is φ = 224391168.

The previous prime is 673840847. The next prime is 673840873. The reversal of 673840872 is 278048376.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 575712036 + 98128836 = 23994^2 + 9906^2 .

It is a super-3 number, since 3×673840872³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (673840873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78958 + ... + 87074.

Almost surely, 2^673840872 is an apocalyptic number.

It is an amenable number.

673840872 is an abundant number, since it is smaller than the sum of its proper divisors (1152952668).

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

673840872 is a wasteful number, since it uses less digits than its factorization.

673840872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9282 (or 9275 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 673840872 is about 25958.4450998129. The cubic root of 673840872 is about 876.7029136479.

The spelling of 673840872 in words is "six hundred seventy-three million, eight hundred forty thousand, eight hundred seventy-two".