720535 has 8 divisors (see below), whose sum is σ = 881280. Its totient is φ = 565344.

The previous prime is 720527. The next prime is 720547. The reversal of 720535 is 535027.

720535 = T₂₀₄ + T₂₀₅ + ... + T₂₃₃.

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

It is a cyclic number.

It is not a de Polignac number, because 720535 - 2³ = 720527 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1095 + ... + 1624.

It is an arithmetic number, because the mean of its divisors is an integer number (110160).

2⁷²⁰⁵³⁵ is an apocalyptic number.

720535 is a deficient number, since it is larger than the sum of its proper divisors (160745).

720535 is a wasteful number, since it uses less digits than its factorization.

720535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777.

The product of its (nonzero) digits is 1050, while the sum is 22.

The square root of 720535 is about 848.8433306565. The cubic root of 720535 is about 89.6502889862.

The spelling of 720535 in words is "seven hundred twenty thousand, five hundred thirty-five".