720536 has 8 divisors (see below), whose sum is σ = 1351020. Its totient is φ = 360264.

The previous prime is 720527. The next prime is 720547. The reversal of 720536 is 635027.

It is a tau number, because it is divible by the number of its divisors (8).

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 720536.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45026 + ... + 45041.

2⁷²⁰⁵³⁶ is an apocalyptic number.

It is an amenable number.

720536 is a deficient number, since it is larger than the sum of its proper divisors (630484).

720536 is a wasteful number, since it uses less digits than its factorization.

720536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90073 (or 90069 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 720536 is about 848.8439196931. The cubic root of 720536 is about 89.6503304601.

The spelling of 720536 in words is "seven hundred twenty thousand, five hundred thirty-six".