720266617 has 12 divisors (see below), whose sum is σ = 850579968. Its totient is φ = 597450600.

The previous prime is 720266581. The next prime is 720266629. The reversal of 720266617 is 716662027.

It is not a de Polignac number, because 720266617 - 2¹¹ = 720264569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (720266017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46809 + ... + 60262.

It is an arithmetic number, because the mean of its divisors is an integer number (70881664).

Almost surely, 2^720266617 is an apocalyptic number.

It is an amenable number.

720266617 is a deficient number, since it is larger than the sum of its proper divisors (130313351).

720266617 is a wasteful number, since it uses less digits than its factorization.

720266617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107140 (or 107109 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 720266617 is about 26837.7833846240. The cubic root of 720266617 is about 896.3915670187.

The spelling of 720266617 in words is "seven hundred twenty million, two hundred sixty-six thousand, six hundred seventeen".