673734209706 has 32 divisors (see below), whose sum is σ = 1497249990720. Its totient is φ = 224568641232.

The previous prime is 673734209699. The next prime is 673734209761. The reversal of 673734209706 is 607902437376.

It is a happy number.

673734209706 is a `hidden beast` number, since 67 + 3 + 73 + 420 + 97 + 0 + 6 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1101301 + ... + 1600103.

It is an arithmetic number, because the mean of its divisors is an integer number (46789062210).

Almost surely, 2^673734209706 is an apocalyptic number.

673734209706 is an abundant number, since it is smaller than the sum of its proper divisors (823515781014).

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

673734209706 is a wasteful number, since it uses less digits than its factorization.

673734209706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523827 (or 523821 counting only the distinct ones).

The product of its (nonzero) digits is 8001504, while the sum is 54.

The spelling of 673734209706 in words is "six hundred seventy-three billion, seven hundred thirty-four million, two hundred nine thousand, seven hundred six".