673157898 has 64 divisors (see below), whose sum is σ = 1714256640. Its totient is φ = 191808000.

The previous prime is 673157879. The next prime is 673157899. The reversal of 673157898 is 898751376.

673157898 is a `hidden beast` number, since 67 + 3 + 1 + 578 + 9 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (673157899) 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 31 ways as a sum of consecutive naturals, for example, 149358 + ... + 153798.

It is an arithmetic number, because the mean of its divisors is an integer number (26785260).

Almost surely, 2^673157898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673157898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (857128320).

673157898 is an abundant number, since it is smaller than the sum of its proper divisors (1041098742).

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

673157898 is a wasteful number, since it uses less digits than its factorization.

673157898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4860 (or 4854 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 673157898 is about 25945.2866239708. The cubic root of 673157898 is about 876.4066183215.

The spelling of 673157898 in words is "six hundred seventy-three million, one hundred fifty-seven thousand, eight hundred ninety-eight".