720454 has 8 divisors (see below), whose sum is σ = 1235088. Its totient is φ = 308760.

The previous prime is 720439. The next prime is 720481. The reversal of 720454 is 454027.

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

It is a super-2 number, since 2×720454² = 1038107932232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25717 + ... + 25744.

It is an arithmetic number, because the mean of its divisors is an integer number (154386).

2⁷²⁰⁴⁵⁴ is an apocalyptic number.

720454 is a deficient number, since it is larger than the sum of its proper divisors (514634).

720454 is a wasteful number, since it uses less digits than its factorization.

720454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51470.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 720454 is about 848.7956173308. The cubic root of 720454 is about 89.6469294707.

The spelling of 720454 in words is "seven hundred twenty thousand, four hundred fifty-four".