720715 has 16 divisors (see below), whose sum is σ = 937440. Its totient is φ = 529920.

The previous prime is 720703. The next prime is 720743. The reversal of 720715 is 517027.

It is not a de Polignac number, because 720715 - 2⁵ = 720683 is a prime.

It is a super-2 number, since 2×720715² = 1038860222450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5116 + ... + 5254.

It is an arithmetic number, because the mean of its divisors is an integer number (58590).

2⁷²⁰⁷¹⁵ is an apocalyptic number.

720715 is a deficient number, since it is larger than the sum of its proper divisors (216725).

720715 is a wasteful number, since it uses less digits than its factorization.

720715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 720715 is about 848.9493506682. The cubic root of 720715 is about 89.6577536749.

The spelling of 720715 in words is "seven hundred twenty thousand, seven hundred fifteen".