720495 has 24 divisors (see below), whose sum is σ = 1297296. Its totient is φ = 383616.

The previous prime is 720491. The next prime is 720497. The reversal of 720495 is 594027.

It is not a de Polignac number, because 720495 - 2² = 720491 is a prime.

It is a super-2 number, since 2×720495² = 1038226090050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 7⁶ + 2¹⁹ + 4⁷ + 0 + 9⁵ + 5⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 919 + ... + 1511.

It is an arithmetic number, because the mean of its divisors is an integer number (54054).

2⁷²⁰⁴⁹⁵ is an apocalyptic number.

720495 is a deficient number, since it is larger than the sum of its proper divisors (576801).

720495 is an equidigital number, since it uses as much as digits as its factorization.

720495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613 (or 601 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 720495 is about 848.8197688556. The cubic root of 720495 is about 89.6486299977.

It can be divided in two parts, 7 and 20495, that added together give a palindrome (20502).

The spelling of 720495 in words is "seven hundred twenty thousand, four hundred ninety-five".