772622645 has 8 divisors (see below), whose sum is σ = 942346680. Its totient is φ = 607965120.

The previous prime is 772622633. The next prime is 772622651. The reversal of 772622645 is 546226277.

It can be written as a sum of positive squares in 4 ways, for example, as 46158436 + 726464209 = 6794^2 + 26953^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 772622645 - 2¹⁰ = 772621621 is a prime.

It is a congruent number.

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, 1266290 + ... + 1266899.

It is an arithmetic number, because the mean of its divisors is an integer number (117793335).

Almost surely, 2^772622645 is an apocalyptic number.

It is an amenable number.

772622645 is a deficient number, since it is larger than the sum of its proper divisors (169724035).

772622645 is a wasteful number, since it uses less digits than its factorization.

772622645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533255.

The product of its digits is 282240, while the sum is 41.

The square root of 772622645 is about 27796.0904625093. The cubic root of 772622645 is about 917.6050836536.

The spelling of 772622645 in words is "seven hundred seventy-two million, six hundred twenty-two thousand, six hundred forty-five".