712221536 has 96 divisors (see below), whose sum is σ = 1600300800. Its totient is φ = 309312000.

The previous prime is 712221533. The next prime is 712221539. The reversal of 712221536 is 635122217.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (712221533) and next prime (712221539).

It is a junction number, because it is equal to n+sod(n) for n = 712221499 and 712221508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712221533) 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, 1983725 + ... + 1984083.

It is an arithmetic number, because the mean of its divisors is an integer number (16669800).

Almost surely, 2^712221536 is an apocalyptic number.

712221536 is a gapful number since it is divisible by the number (76) 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 712221536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (800150400).

712221536 is an abundant number, since it is smaller than the sum of its proper divisors (888079264).

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

712221536 is a wasteful number, since it uses less digits than its factorization.

712221536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 644 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 712221536 is about 26687.4790117013. The cubic root of 712221536 is about 893.0416220385.

The spelling of 712221536 in words is "seven hundred twelve million, two hundred twenty-one thousand, five hundred thirty-six".