720585426 has 32 divisors (see below), whose sum is σ = 1664670528. Its totient is φ = 205514240.

The previous prime is 720585419. The next prime is 720585433. The reversal of 720585426 is 624585027.

720585426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (720585419) and next prime (720585433).

It is a Curzon number.

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, 319995 + ... + 322238.

It is an arithmetic number, because the mean of its divisors is an integer number (52020954).

Almost surely, 2^720585426 is an apocalyptic number.

720585426 is an abundant number, since it is smaller than the sum of its proper divisors (944085102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720585426 is a wasteful number, since it uses less digits than its factorization.

720585426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642266.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 720585426 is about 26843.7222828728. The cubic root of 720585426 is about 896.5238030262.

The spelling of 720585426 in words is "seven hundred twenty million, five hundred eighty-five thousand, four hundred twenty-six".