720223749 has 24 divisors (see below), whose sum is σ = 1189773312. Its totient is φ = 411268320.

The previous prime is 720223733. The next prime is 720223781. The reversal of 720223749 is 947322027.

It is not a de Polignac number, because 720223749 - 2⁴ = 720223733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720223789) 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 23 ways as a sum of consecutive naturals, for example, 114172 + ... + 120314.

It is an arithmetic number, because the mean of its divisors is an integer number (49573888).

Almost surely, 2^720223749 is an apocalyptic number.

It is an amenable number.

720223749 is a deficient number, since it is larger than the sum of its proper divisors (469549563).

720223749 is a wasteful number, since it uses less digits than its factorization.

720223749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8017 (or 8014 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 720223749 is about 26836.9847225801. The cubic root of 720223749 is about 896.3737831985.

The spelling of 720223749 in words is "seven hundred twenty million, two hundred twenty-three thousand, seven hundred forty-nine".