720969 has 8 divisors (see below), whose sum is σ = 994560. Its totient is φ = 464016.

The previous prime is 720961. The next prime is 720971. The reversal of 720969 is 969027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 720969 - 2³ = 720961 is a prime.

It is a super-2 number, since 2×720969² = 1039592597922, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720969.

It is not an unprimeable number, because it can be changed into a prime (720961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4057 + ... + 4230.

It is an arithmetic number, because the mean of its divisors is an integer number (124320).

2⁷²⁰⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

720969 is a deficient number, since it is larger than the sum of its proper divisors (273591).

720969 is a wasteful number, since it uses less digits than its factorization.

720969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8319.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 720969 is about 849.0989341649. The cubic root of 720969 is about 89.6682850660.

The spelling of 720969 in words is "seven hundred twenty thousand, nine hundred sixty-nine".