772897 has 4 divisors (see below), whose sum is σ = 774676. Its totient is φ = 771120.

The previous prime is 772867. The next prime is 772903. The reversal of 772897 is 798277.

772897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 798277 = 139 ⋅5743.

It can be written as a sum of positive squares in 2 ways, for example, as 463761 + 309136 = 681^2 + 556^2 .

It is a cyclic number.

It is not a de Polignac number, because 772897 - 2¹⁹ = 248609 is a prime.

It is a Duffinian number.

772897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (772847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247 + ... + 1267.

It is an arithmetic number, because the mean of its divisors is an integer number (193669).

2⁷⁷²⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

772897 is a deficient number, since it is larger than the sum of its proper divisors (1779).

772897 is a wasteful number, since it uses less digits than its factorization.

772897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778.

The product of its digits is 49392, while the sum is 40.

The square root of 772897 is about 879.1456079626. The cubic root of 772897 is about 91.7713683348.

The spelling of 772897 in words is "seven hundred seventy-two thousand, eight hundred ninety-seven".