76976421 has 8 divisors (see below), whose sum is σ = 102922560. Its totient is φ = 51173952.

The previous prime is 76976401. The next prime is 76976437. The reversal of 76976421 is 12467967.

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

It is not a de Polignac number, because 76976421 - 2¹⁰ = 76975397 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76976401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34660 + ... + 36813.

It is an arithmetic number, because the mean of its divisors is an integer number (12865320).

Almost surely, 2^76976421 is an apocalyptic number.

It is an amenable number.

76976421 is a deficient number, since it is larger than the sum of its proper divisors (25946139).

76976421 is a wasteful number, since it uses less digits than its factorization.

76976421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71835.

The product of its digits is 127008, while the sum is 42.

The square root of 76976421 is about 8773.6207463054. The cubic root of 76976421 is about 425.3886566965.

The spelling of 76976421 in words is "seventy-six million, nine hundred seventy-six thousand, four hundred twenty-one".