720101617 has 8 divisors (see below), whose sum is σ = 736618752. Its totient is φ = 703634400.

The previous prime is 720101611. The next prime is 720101621. The reversal of 720101617 is 716101027.

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 720101617 - 2⁷ = 720101489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 720101591 and 720101600.

It is not an unprimeable number, because it can be changed into a prime (720101611) 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, 17517 + ... + 41797.

It is an arithmetic number, because the mean of its divisors is an integer number (92077344).

Almost surely, 2^720101617 is an apocalyptic number.

It is an amenable number.

720101617 is a deficient number, since it is larger than the sum of its proper divisors (16517135).

720101617 is a wasteful number, since it uses less digits than its factorization.

720101617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24959.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 720101617 is about 26834.7091841890. The cubic root of 720101617 is about 896.3231127822.

The spelling of 720101617 in words is "seven hundred twenty million, one hundred one thousand, six hundred seventeen".