723745145 has 8 divisors (see below), whose sum is σ = 868648704. Its totient is φ = 578893104.

The previous prime is 723745133. The next prime is 723745147. The reversal of 723745145 is 541547327.

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 723745145 - 2⁴ = 723745129 is a prime.

It is a super-2 number, since 2×723745145² = 1047614069822142050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 723745099 and 723745108.

It is not an unprimeable number, because it can be changed into a prime (723745147) 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, 32702 + ... + 50168.

It is an arithmetic number, because the mean of its divisors is an integer number (108581088).

Almost surely, 2^723745145 is an apocalyptic number.

It is an amenable number.

723745145 is a deficient number, since it is larger than the sum of its proper divisors (144903559).

723745145 is a wasteful number, since it uses less digits than its factorization.

723745145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25759.

The product of its digits is 117600, while the sum is 38.

The square root of 723745145 is about 26902.5118715707. The cubic root of 723745145 is about 897.8322913547.

The spelling of 723745145 in words is "seven hundred twenty-three million, seven hundred forty-five thousand, one hundred forty-five".