495778 has 4 divisors (see below), whose sum is σ = 743670. Its totient is φ = 247888.

The previous prime is 495773. The next prime is 495787. The reversal of 495778 is 877594.

495778 is digitally balanced in base 3, 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 can be written as a sum of positive squares in only one way, i.e., 452929 + 42849 = 673^2 + 207^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 495778.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123943 + ... + 123946.

2⁴⁹⁵⁷⁷⁸ is an apocalyptic number.

495778 is a deficient number, since it is larger than the sum of its proper divisors (247892).

495778 is a wasteful number, since it uses less digits than its factorization.

495778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247891.

The product of its digits is 70560, while the sum is 40.

The square root of 495778 is about 704.1150474177. The cubic root of 495778 is about 79.1460205934.

The spelling of 495778 in words is "four hundred ninety-five thousand, seven hundred seventy-eight".