720704749 has 8 divisors (see below), whose sum is σ = 764173440. Its totient is φ = 677355456.

The previous prime is 720704731. The next prime is 720704767. The reversal of 720704749 is 947407027.

It is an interprime number because it is at equal distance from previous prime (720704731) and next prime (720704767).

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 720704749 - 2²¹ = 718607597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720704849) 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, 17259 + ... + 41704.

It is an arithmetic number, because the mean of its divisors is an integer number (95521680).

Almost surely, 2^720704749 is an apocalyptic number.

It is an amenable number.

720704749 is a deficient number, since it is larger than the sum of its proper divisors (43468691).

720704749 is a wasteful number, since it uses less digits than its factorization.

720704749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59699.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 720704749 is about 26845.9447403141. The cubic root of 720704749 is about 896.5732859427.

The spelling of 720704749 in words is "seven hundred twenty million, seven hundred four thousand, seven hundred forty-nine".