731681669964 has 24 divisors (see below), whose sum is σ = 1951151120128. Its totient is φ = 209051905680.

The previous prime is 731681669959. The next prime is 731681669969. The reversal of 731681669964 is 469966186137.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (731681669959) and next prime (731681669969).

It is a super-2 number, since 2×731681669964² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 731681669895 and 731681669904.

It is not an unprimeable number, because it can be changed into a prime (731681669969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4355247952 + ... + 4355248119.

Almost surely, 2^731681669964 is an apocalyptic number.

It is an amenable number.

731681669964 is an abundant number, since it is smaller than the sum of its proper divisors (1219469450164).

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

731681669964 is a wasteful number, since it uses less digits than its factorization.

731681669964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8710496085 (or 8710496083 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 66.

The spelling of 731681669964 in words is "seven hundred thirty-one billion, six hundred eighty-one million, six hundred sixty-nine thousand, nine hundred sixty-four".