673861685 has 8 divisors (see below), whose sum is σ = 924153216. Its totient is φ = 462076560.

The previous prime is 673861681. The next prime is 673861709. The reversal of 673861685 is 586168376.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 673861685 - 2² = 673861681 is a prime.

It is a super-2 number, since 2×673861685² = 908179141022078450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673861681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9626561 + ... + 9626630.

It is an arithmetic number, because the mean of its divisors is an integer number (115519152).

Almost surely, 2^673861685 is an apocalyptic number.

It is an amenable number.

673861685 is a deficient number, since it is larger than the sum of its proper divisors (250291531).

673861685 is a wasteful number, since it uses less digits than its factorization.

673861685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19253203.

The product of its digits is 1451520, while the sum is 50.

The square root of 673861685 is about 25958.8459874471. The cubic root of 673861685 is about 876.7119398294.

The spelling of 673861685 in words is "six hundred seventy-three million, eight hundred sixty-one thousand, six hundred eighty-five".