720973311 has 16 divisors (see below), whose sum is σ = 967938048. Its totient is φ = 477338400.

The previous prime is 720973307. The next prime is 720973313. The reversal of 720973311 is 113379027.

It is a happy number.

It is not a de Polignac number, because 720973311 - 2² = 720973307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720973313) 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, 585066 + ... + 586296.

It is an arithmetic number, because the mean of its divisors is an integer number (60496128).

Almost surely, 2^720973311 is an apocalyptic number.

720973311 is a deficient number, since it is larger than the sum of its proper divisors (246964737).

720973311 is a wasteful number, since it uses less digits than its factorization.

720973311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422.

The product of its (nonzero) digits is 7938, while the sum is 33.

The square root of 720973311 is about 26850.9461844457. The cubic root of 720973311 is about 896.6846378811.

The spelling of 720973311 in words is "seven hundred twenty million, nine hundred seventy-three thousand, three hundred eleven".