772243648 has 56 divisors (see below), whose sum is σ = 1679569920. Its totient is φ = 349374720.

The previous prime is 772243609. The next prime is 772243673. The reversal of 772243648 is 846342277.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154533 + ... + 159451.

It is an arithmetic number, because the mean of its divisors is an integer number (29992320).

Almost surely, 2^772243648 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 772243648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (839784960).

772243648 is an abundant number, since it is smaller than the sum of its proper divisors (907326272).

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

772243648 is a wasteful number, since it uses less digits than its factorization.

772243648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5165 (or 5155 counting only the distinct ones).

The product of its digits is 451584, while the sum is 43.

The square root of 772243648 is about 27789.2721747080. The cubic root of 772243648 is about 917.4550205511.

The spelling of 772243648 in words is "seven hundred seventy-two million, two hundred forty-three thousand, six hundred forty-eight".