772662020 has 24 divisors (see below), whose sum is σ = 1747405464. Its totient is φ = 285290496.

The previous prime is 772662013. The next prime is 772662029. The reversal of 772662020 is 20266277.

It can be written as a sum of positive squares in 4 ways, for example, as 42797764 + 729864256 = 6542^2 + 27016^2 .

It is not an unprimeable number, because it can be changed into a prime (772662029) 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, 1485629 + ... + 1486148.

It is an arithmetic number, because the mean of its divisors is an integer number (72808561).

Almost surely, 2^772662020 is an apocalyptic number.

It is an amenable number.

772662020 is an abundant number, since it is smaller than the sum of its proper divisors (974743444).

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

772662020 is a wasteful number, since it uses less digits than its factorization.

772662020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971799 (or 2971797 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 772662020 is about 27796.7987365452. The cubic root of 772662020 is about 917.6206712917.

The spelling of 772662020 in words is "seven hundred seventy-two million, six hundred sixty-two thousand, twenty".