720017233 has 6 divisors (see below), whose sum is σ = 779663814. Its totient is φ = 664631136.

The previous prime is 720017227. The next prime is 720017239. The reversal of 720017233 is 332710027.

It is an interprime number because it is at equal distance from previous prime (720017227) and next prime (720017239).

It can be written as a sum of positive squares in 3 ways, for example, as 101848464 + 618168769 = 10092^2 + 24863^2 .

It is a de Polignac number, because none of the positive numbers 2^k-720017233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 720017198 and 720017207.

It is not an unprimeable number, because it can be changed into a prime (720017239) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2130060 + ... + 2130397.

It is an arithmetic number, because the mean of its divisors is an integer number (129943969).

Almost surely, 2^720017233 is an apocalyptic number.

It is an amenable number.

720017233 is a deficient number, since it is larger than the sum of its proper divisors (59646581).

720017233 is a wasteful number, since it uses less digits than its factorization.

720017233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260483 (or 4260470 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 720017233 is about 26833.1368460715. The cubic root of 720017233 is about 896.2880999996.

The spelling of 720017233 in words is "seven hundred twenty million, seventeen thousand, two hundred thirty-three".