720895 has 16 divisors (see below), whose sum is σ = 1013760. Its totient is φ = 481824.

The previous prime is 720887. The next prime is 720899. The reversal of 720895 is 598027.

It is not a de Polignac number, because 720895 - 2³ = 720887 is a prime.

It is a plaindrome in base 4, base 8 and base 16.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720899) 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, 1266 + ... + 1744.

It is an arithmetic number, because the mean of its divisors is an integer number (63360).

2⁷²⁰⁸⁹⁵ is an apocalyptic number.

720895 is a deficient number, since it is larger than the sum of its proper divisors (292865).

720895 is a wasteful number, since it uses less digits than its factorization.

720895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 720895 is about 849.0553574414. The cubic root of 720895 is about 89.6652171209.

It can be divided in two parts, 7 and 20895, that added together give a palindrome (20902).

The spelling of 720895 in words is "seven hundred twenty thousand, eight hundred ninety-five".