772208660 has 24 divisors (see below), whose sum is σ = 1623060936. Its totient is φ = 308612480.

The previous prime is 772208651. The next prime is 772208669. The reversal of 772208660 is 66802277.

It is an interprime number because it is at equal distance from previous prime (772208651) and next prime (772208669).

It can be written as a sum of positive squares in 4 ways, for example, as 47306884 + 724901776 = 6878^2 + 26924^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772208669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7274 + ... + 39966.

It is an arithmetic number, because the mean of its divisors is an integer number (67627539).

Almost surely, 2^772208660 is an apocalyptic number.

It is an amenable number.

772208660 is an abundant number, since it is smaller than the sum of its proper divisors (850852276).

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

772208660 is a wasteful number, since it uses less digits than its factorization.

772208660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33883 (or 33881 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 772208660 is about 27788.6426440731. The cubic root of 772208660 is about 917.4411646473.

The spelling of 772208660 in words is "seven hundred seventy-two million, two hundred eight thousand, six hundred sixty".