531727616 has 216 divisors, whose sum is σ = 1370134080. Its totient is φ = 204374016.

The previous prime is 531727613. The next prime is 531727621. The reversal of 531727616 is 616727135.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 531727616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531727613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5481680 + ... + 5481776.

Almost surely, 2^531727616 is an apocalyptic number.

531727616 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531727616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685067040).

531727616 is an abundant number, since it is smaller than the sum of its proper divisors (838406464).

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

531727616 is a wasteful number, since it uses less digits than its factorization.

531727616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 148 counting only the distinct ones).

The product of its digits is 52920, while the sum is 38.

The square root of 531727616 is about 23059.2197613016. The cubic root of 531727616 is about 810.1455898439.

The spelling of 531727616 in words is "five hundred thirty-one million, seven hundred twenty-seven thousand, six hundred sixteen".