772643 has 4 divisors (see below), whose sum is σ = 774648. Its totient is φ = 770640.

The previous prime is 772631. The next prime is 772649. The reversal of 772643 is 346277.

772643 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.

It is a cyclic number.

It is not a de Polignac number, because 772643 - 2¹⁰ = 771619 is a prime.

It is a d-powerful number, because it can be written as 7⁶ + 7⁶ + 6⁴ + 2⁹ + 4⁶ + 3¹² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (772649) 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, 221 + ... + 1262.

It is an arithmetic number, because the mean of its divisors is an integer number (193662).

2⁷⁷²⁶⁴³ is an apocalyptic number.

772643 is a deficient number, since it is larger than the sum of its proper divisors (2005).

772643 is a wasteful number, since it uses less digits than its factorization.

772643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004.

The product of its digits is 7056, while the sum is 29.

The square root of 772643 is about 879.0011376557. The cubic root of 772643 is about 91.7613141786.

The spelling of 772643 in words is "seven hundred seventy-two thousand, six hundred forty-three".