731632616 has 128 divisors (see below), whose sum is σ = 1676505600. Its totient is φ = 294900480.

The previous prime is 731632613. The next prime is 731632631. The reversal of 731632616 is 616236137.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (731632613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5263475 + ... + 5263613.

It is an arithmetic number, because the mean of its divisors is an integer number (13097700).

Almost surely, 2^731632616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731632616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (838252800).

731632616 is an abundant number, since it is smaller than the sum of its proper divisors (944872984).

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

731632616 is a wasteful number, since it uses less digits than its factorization.

731632616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 315 counting only the distinct ones).

The product of its digits is 27216, while the sum is 35.

The square root of 731632616 is about 27048.7082131476. The cubic root of 731632616 is about 901.0820795528.

The spelling of 731632616 in words is "seven hundred thirty-one million, six hundred thirty-two thousand, six hundred sixteen".