76563021 has 8 divisors (see below), whose sum is σ = 106522560. Its totient is φ = 48822752.

The previous prime is 76563001. The next prime is 76563029. The reversal of 76563021 is 12036567.

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 76563021 - 2⁶ = 76562957 is a prime.

It is a zygodrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 76563021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76563029) 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, 554736 + ... + 554873.

It is an arithmetic number, because the mean of its divisors is an integer number (13315320).

Almost surely, 2^76563021 is an apocalyptic number.

It is an amenable number.

76563021 is a deficient number, since it is larger than the sum of its proper divisors (29959539).

76563021 is a wasteful number, since it uses less digits than its factorization.

76563021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109635.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 76563021 is about 8750.0297713779. The cubic root of 76563021 is about 424.6257762344.

Adding to 76563021 its reverse (12036567), we get a palindrome (88599588).

The spelling of 76563021 in words is "seventy-six million, five hundred sixty-three thousand, twenty-one".