720046 has 4 divisors (see below), whose sum is σ = 1080072. Its totient is φ = 360022.

The previous prime is 720023. The next prime is 720053. The reversal of 720046 is 640027.

720046 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180010 + ... + 180013.

It is an arithmetic number, because the mean of its divisors is an integer number (270018).

2⁷²⁰⁰⁴⁶ is an apocalyptic number.

720046 is a deficient number, since it is larger than the sum of its proper divisors (360026).

720046 is a wasteful number, since it uses less digits than its factorization.

720046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360025.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 720046 is about 848.5552427509. Note that the first 3 decimals coincide. The cubic root of 720046 is about 89.6300036370.

Subtracting from 720046 its sum of digits (19), we obtain a palindrome (720027).

It can be divided in two parts, 72004 and 6, that added together give a triangular number (72010 = T₃₇₉).

The spelling of 720046 in words is "seven hundred twenty thousand, forty-six".