76648021 has 8 divisors (see below), whose sum is σ = 78089760. Its totient is φ = 75211152.

The previous prime is 76648009. The next prime is 76648031. The reversal of 76648021 is 12084667.

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 76648021 - 2¹¹ = 76645973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76648031) 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, 49566 + ... + 51088.

It is an arithmetic number, because the mean of its divisors is an integer number (9761220).

Almost surely, 2^76648021 is an apocalyptic number.

It is an amenable number.

76648021 is a deficient number, since it is larger than the sum of its proper divisors (1441739).

76648021 is a wasteful number, since it uses less digits than its factorization.

76648021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 76648021 is about 8754.8855503656. The cubic root of 76648021 is about 424.7828574724.

The spelling of 76648021 in words is "seventy-six million, six hundred forty-eight thousand, twenty-one".