723249985 has 16 divisors (see below), whose sum is σ = 875957760. Its totient is φ = 573249600.

The previous prime is 723249983. The next prime is 723250027. The reversal of 723249985 is 589942327.

It is not a de Polignac number, because 723249985 - 2¹ = 723249983 is a prime.

Its product of digits (1088640) is a multiple of the sum of its prime divisors (2688).

It is not an unprimeable number, because it can be changed into a prime (723249983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348531 + ... + 350599.

It is an arithmetic number, because the mean of its divisors is an integer number (54747360).

Almost surely, 2^723249985 is an apocalyptic number.

It is an amenable number.

723249985 is a deficient number, since it is larger than the sum of its proper divisors (152707775).

723249985 is a wasteful number, since it uses less digits than its factorization.

723249985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688.

The product of its digits is 1088640, while the sum is 49.

The square root of 723249985 is about 26893.3074388406. The cubic root of 723249985 is about 897.6274899522.

The spelling of 723249985 in words is "seven hundred twenty-three million, two hundred forty-nine thousand, nine hundred eighty-five".