76966409 has 8 divisors (see below), whose sum is σ = 82998720. Its totient is φ = 70950096.

The previous prime is 76966381. The next prime is 76966411. The reversal of 76966409 is 90466967.

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 76966409 - 2¹² = 76962313 is a prime.

It is a super-2 number, since 2×76966409² = 11847656228710562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76966469) 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, 7172 + ... + 14330.

It is an arithmetic number, because the mean of its divisors is an integer number (10374840).

Almost surely, 2^76966409 is an apocalyptic number.

It is an amenable number.

76966409 is a deficient number, since it is larger than the sum of its proper divisors (6032311).

76966409 is a wasteful number, since it uses less digits than its factorization.

76966409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7999.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 76966409 is about 8773.0501537379. The cubic root of 76966409 is about 425.3702130578.

The spelling of 76966409 in words is "seventy-six million, nine hundred sixty-six thousand, four hundred nine".