772820001 has 16 divisors (see below), whose sum is σ = 1151949120. Its totient is φ = 512049600.

The previous prime is 772819997. The next prime is 772820011. The reversal of 772820001 is 100028277.

It is not a de Polignac number, because 772820001 - 2² = 772819997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (772820011) 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, 83400 + ... + 92201.

It is an arithmetic number, because the mean of its divisors is an integer number (71996820).

Almost surely, 2^772820001 is an apocalyptic number.

It is an amenable number.

772820001 is a deficient number, since it is larger than the sum of its proper divisors (379129119).

772820001 is a wasteful number, since it uses less digits than its factorization.

772820001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175773 (or 175767 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 772820001 is about 27799.6403034284. The cubic root of 772820001 is about 917.6832069362.

Adding to 772820001 its reverse (100028277), we get a palindrome (872848278).

The spelling of 772820001 in words is "seven hundred seventy-two million, eight hundred twenty thousand, one".