720516407 has 8 divisors (see below), whose sum is σ = 779190720. Its totient is φ = 662306400.

The previous prime is 720516383. The next prime is 720516431. The reversal of 720516407 is 704615027.

It is an interprime number because it is at equal distance from previous prime (720516383) and next prime (720516431).

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 720516407 - 2⁶ = 720516343 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 (720513407) 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, 112844 + ... + 119057.

It is an arithmetic number, because the mean of its divisors is an integer number (97398840).

Almost surely, 2^720516407 is an apocalyptic number.

720516407 is a deficient number, since it is larger than the sum of its proper divisors (58674313).

720516407 is a wasteful number, since it uses less digits than its factorization.

720516407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232153.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 720516407 is about 26842.4366814937. The cubic root of 720516407 is about 896.4951785449.

The spelling of 720516407 in words is "seven hundred twenty million, five hundred sixteen thousand, four hundred seven".