723537161 has 8 divisors (see below), whose sum is σ = 731028480. Its totient is φ = 716074128.

The previous prime is 723537149. The next prime is 723537167. The reversal of 723537161 is 161735327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 723537161 - 2¹⁰ = 723536137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723537167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46415 + ... + 60011.

It is an arithmetic number, because the mean of its divisors is an integer number (91378560).

Almost surely, 2^723537161 is an apocalyptic number.

It is an amenable number.

723537161 is a deficient number, since it is larger than the sum of its proper divisors (7491319).

723537161 is a wasteful number, since it uses less digits than its factorization.

723537161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14143.

The product of its digits is 26460, while the sum is 35.

The square root of 723537161 is about 26898.6460811692. The cubic root of 723537161 is about 897.7462791984.

The spelling of 723537161 in words is "seven hundred twenty-three million, five hundred thirty-seven thousand, one hundred sixty-one".