768033821 has 4 divisors (see below), whose sum is σ = 768175200. Its totient is φ = 767892444.

The previous prime is 768033809. The next prime is 768033823. The reversal of 768033821 is 128330867.

It is a happy number.

768033821 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-768033821 is a prime.

It is a super-3 number, since 3×768033821³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768033823) 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, 62201 + ... + 73518.

It is an arithmetic number, because the mean of its divisors is an integer number (192043800).

Almost surely, 2^768033821 is an apocalyptic number.

It is an amenable number.

768033821 is a deficient number, since it is larger than the sum of its proper divisors (141379).

768033821 is a wasteful number, since it uses less digits than its factorization.

768033821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141378.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 768033821 is about 27713.4231194921. The cubic root of 768033821 is about 915.7848366858.

The spelling of 768033821 in words is "seven hundred sixty-eight million, thirty-three thousand, eight hundred twenty-one".