5200621660 has 48 divisors (see below), whose sum is σ = 11767516992. Its totient is φ = 1919232000.

The previous prime is 5200621637. The next prime is 5200621667. The reversal of 5200621660 is 661260025.

It is a super-2 number, since 2×5200621660² = 54092931300922311200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5200621667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 659340 + ... + 667180.

It is an arithmetic number, because the mean of its divisors is an integer number (245156604).

Almost surely, 2^5200621660 is an apocalyptic number.

It is an amenable number.

5200621660 is an abundant number, since it is smaller than the sum of its proper divisors (6566895332).

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

5200621660 is a wasteful number, since it uses less digits than its factorization.

5200621660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10414 (or 10412 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 5200621660 is about 72115.3358170091. The cubic root of 5200621660 is about 1732.5472471875.

Adding to 5200621660 its reverse (661260025), we get a palindrome (5861881685).

The spelling of 5200621660 in words is "five billion, two hundred million, six hundred twenty-one thousand, six hundred sixty".