768445 has 4 divisors (see below), whose sum is σ = 922140. Its totient is φ = 614752.

The previous prime is 768437. The next prime is 768457. The reversal of 768445 is 544867.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544867 = 17 ⋅32051.

It can be written as a sum of positive squares in 2 ways, for example, as 606841 + 161604 = 779^2 + 402^2 .

It is a cyclic number.

It is not a de Polignac number, because 768445 - 2³ = 768437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 768445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76840 + ... + 76849.

It is an arithmetic number, because the mean of its divisors is an integer number (230535).

2⁷⁶⁸⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

768445 is a deficient number, since it is larger than the sum of its proper divisors (153695).

768445 is a wasteful number, since it uses less digits than its factorization.

768445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153694.

The product of its digits is 26880, while the sum is 34.

The square root of 768445 is about 876.6099474681. The cubic root of 768445 is about 91.5948234141.

The spelling of 768445 in words is "seven hundred sixty-eight thousand, four hundred forty-five".