720585064 has 32 divisors (see below), whose sum is σ = 1401974280. Its totient is φ = 346927104.

The previous prime is 720585043. The next prime is 720585077. The reversal of 720585064 is 460585027.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 658332964 + 62252100 = 25658^2 + 7890^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 16164 + ... + 41260.

Almost surely, 2^720585064 is an apocalyptic number.

720585064 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

720585064 is a deficient number, since it is larger than the sum of its proper divisors (681389216).

720585064 is a wasteful number, since it uses less digits than its factorization.

720585064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25237 (or 25233 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 720585064 is about 26843.7155401409. The cubic root of 720585064 is about 896.5236528975.

Subtracting from 720585064 its sum of digits (37), we obtain a palindrome (720585027).

The spelling of 720585064 in words is "seven hundred twenty million, five hundred eighty-five thousand, sixty-four".