731612725667 has 4 divisors (see below), whose sum is σ = 756840750720. Its totient is φ = 706384700616.

The previous prime is 731612725637. The next prime is 731612725681. The reversal of 731612725667 is 766527216137.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 731612725667 - 2¹² = 731612721571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (731612725637) 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 3 ways as a sum of consecutive naturals, for example, 12614012483 + ... + 12614012540.

It is an arithmetic number, because the mean of its divisors is an integer number (189210187680).

Almost surely, 2^731612725667 is an apocalyptic number.

731612725667 is a deficient number, since it is larger than the sum of its proper divisors (25228025053).

731612725667 is a wasteful number, since it uses less digits than its factorization.

731612725667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25228025052.

The product of its digits is 4445280, while the sum is 53.

The spelling of 731612725667 in words is "seven hundred thirty-one billion, six hundred twelve million, seven hundred twenty-five thousand, six hundred sixty-seven".