720894 has 16 divisors (see below), whose sum is σ = 1453968. Its totient is φ = 238272.

The previous prime is 720887. The next prime is 720899. The reversal of 720894 is 498027.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384 + ... + 1260.

It is an arithmetic number, because the mean of its divisors is an integer number (90873).

2⁷²⁰⁸⁹⁴ is an apocalyptic number.

720894 is an abundant number, since it is smaller than the sum of its proper divisors (733074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720894 is a wasteful number, since it uses less digits than its factorization.

720894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 720894 is about 849.0547685515. The cubic root of 720894 is about 89.6651756607.

The spelling of 720894 in words is "seven hundred twenty thousand, eight hundred ninety-four".