716571648 has 132 divisors (see below), whose sum is σ = 2228618028. Its totient is φ = 220446720.

The previous prime is 716571631. The next prime is 716571649. The reversal of 716571648 is 846175617.

716571648 is a `hidden beast` number, since 7 + 16 + 571 + 64 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54641664 + 661929984 = 7392^2 + 25728^2 .

It is a super-3 number, since 3×716571648³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (716571649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116818 + ... + 122798.

Almost surely, 2^716571648 is an apocalyptic number.

716571648 is a gapful number since it is divisible by the number (78) 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 716571648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1114309014).

716571648 is an abundant number, since it is smaller than the sum of its proper divisors (1512046380).

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

716571648 is a wasteful number, since it uses less digits than its factorization.

716571648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6020 (or 5999 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 716571648 is about 26768.8559337152. The cubic root of 716571648 is about 894.8561082823.

The spelling of 716571648 in words is "seven hundred sixteen million, five hundred seventy-one thousand, six hundred forty-eight".