801778268 has 24 divisors (see below), whose sum is σ = 1425278400. Its totient is φ = 394587648.

The previous prime is 801778261. The next prime is 801778309. The reversal of 801778268 is 862877108.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801778261) 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, 102728 + ... + 110256.

It is an arithmetic number, because the mean of its divisors is an integer number (59386600).

Almost surely, 2^801778268 is an apocalyptic number.

It is an amenable number.

801778268 is a deficient number, since it is larger than the sum of its proper divisors (623500132).

801778268 is a wasteful number, since it uses less digits than its factorization.

801778268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7949 (or 7947 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 47.

The square root of 801778268 is about 28315.6894318327. The cubic root of 801778268 is about 929.0050901127.

The spelling of 801778268 in words is "eight hundred one million, seven hundred seventy-eight thousand, two hundred sixty-eight".