778253 has 8 divisors (see below), whose sum is σ = 902208. Its totient is φ = 657504.

The previous prime is 778247. The next prime is 778301. The reversal of 778253 is 352877.

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

It is a cyclic number.

It is not a de Polignac number, because 778253 - 2⁴ = 778237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 778253.

It is not an unprimeable number, because it can be changed into a prime (778213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251 + ... + 1272.

It is an arithmetic number, because the mean of its divisors is an integer number (112776).

2⁷⁷⁸²⁵³ is an apocalyptic number.

778253 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

778253 is a deficient number, since it is larger than the sum of its proper divisors (123955).

778253 is a wasteful number, since it uses less digits than its factorization.

778253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603.

The product of its digits is 11760, while the sum is 32.

The square root of 778253 is about 882.1864882212. The cubic root of 778253 is about 91.9828654290.

The spelling of 778253 in words is "seven hundred seventy-eight thousand, two hundred fifty-three".