537660990 has 80 divisors (see below), whose sum is σ = 1466229600. Its totient is φ = 141341760.

The previous prime is 537660979. The next prime is 537661013. The reversal of 537660990 is 99066735.

537660990 is a `hidden beast` number, since 5 + 37 + 6 + 609 + 9 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

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 39 ways as a sum of consecutive naturals, for example, 52836 + ... + 62184.

It is an arithmetic number, because the mean of its divisors is an integer number (18327870).

Almost surely, 2^537660990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 537660990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (733114800).

537660990 is an abundant number, since it is smaller than the sum of its proper divisors (928568610).

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

537660990 is a wasteful number, since it uses less digits than its factorization.

537660990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9439 (or 9430 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 537660990 is about 23187.5179784297. The cubic root of 537660990 is about 813.1478333039.

It can be divided in two parts, 5376 and 60990, that added together give a palindrome (66366).

The spelling of 537660990 in words is "five hundred thirty-seven million, six hundred sixty thousand, nine hundred ninety".