537809706 has 160 divisors (see below), whose sum is σ = 1469424000. Its totient is φ = 143607168.

The previous prime is 537809683. The next prime is 537809719. The reversal of 537809706 is 607908735.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2348400 + ... + 2348628.

It is an arithmetic number, because the mean of its divisors is an integer number (9183900).

Almost surely, 2^537809706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 537809706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (734712000).

537809706 is an abundant number, since it is smaller than the sum of its proper divisors (931614294).

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

537809706 is a wasteful number, since it uses less digits than its factorization.

537809706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 537809706 is about 23190.7245682406. The cubic root of 537809706 is about 813.2227981037. Note that the first 3 decimals are identical.

The spelling of 537809706 in words is "five hundred thirty-seven million, eight hundred nine thousand, seven hundred six".