720475 has 24 divisors (see below), whose sum is σ = 1071360. Its totient is φ = 469920.

The previous prime is 720439. The next prime is 720481. The reversal of 720475 is 574027.

It is not a de Polignac number, because 720475 - 2¹¹ = 718427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3936 + ... + 4114.

It is an arithmetic number, because the mean of its divisors is an integer number (44640).

2⁷²⁰⁴⁷⁵ is an apocalyptic number.

720475 is a deficient number, since it is larger than the sum of its proper divisors (350885).

720475 is a wasteful number, since it uses less digits than its factorization.

720475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 720475 is about 848.8079877098. The cubic root of 720475 is about 89.6478004804.

The spelling of 720475 in words is "seven hundred twenty thousand, four hundred seventy-five".