673653942 has 96 divisors (see below), whose sum is σ = 1639884960. Its totient is φ = 204871680.

The previous prime is 673653919. The next prime is 673653943. The reversal of 673653942 is 249356376.

673653942 is a `hidden beast` number, since 6 + 73 + 6 + 539 + 42 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673653943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 884842 + ... + 885602.

It is an arithmetic number, because the mean of its divisors is an integer number (17082135).

Almost surely, 2^673653942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673653942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819942480).

673653942 is an abundant number, since it is smaller than the sum of its proper divisors (966231018).

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

673653942 is a wasteful number, since it uses less digits than its factorization.

673653942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 876 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 673653942 is about 25954.8442877240. The cubic root of 673653942 is about 876.6218375171.

The spelling of 673653942 in words is "six hundred seventy-three million, six hundred fifty-three thousand, nine hundred forty-two".