720117 has 16 divisors (see below), whose sum is σ = 1080000. Its totient is φ = 474192.

The previous prime is 720101. The next prime is 720127. The reversal of 720117 is 711027.

It is not a de Polignac number, because 720117 - 2⁴ = 720101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 720117.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720117.

It is not an unprimeable number, because it can be changed into a prime (720127) 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, 3934 + ... + 4112.

It is an arithmetic number, because the mean of its divisors is an integer number (67500).

2⁷²⁰¹¹⁷ is an apocalyptic number.

720117 is the 537-th heptagonal number.

It is an amenable number.

720117 is a deficient number, since it is larger than the sum of its proper divisors (359883).

720117 is a wasteful number, since it uses less digits than its factorization.

720117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 18.

The square root of 720117 is about 848.5970775344. The cubic root of 720117 is about 89.6329495233.

The spelling of 720117 in words is "seven hundred twenty thousand, one hundred seventeen", and thus it is an iban number.