76471921 has 4 divisors (see below), whose sum is σ = 77440000. Its totient is φ = 75503844.

The previous prime is 76471897. The next prime is 76471999. The reversal of 76471921 is 12917467.

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 not a de Polignac number, because 76471921 - 2²³ = 68083313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76474921) 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, 483921 + ... + 484078.

It is an arithmetic number, because the mean of its divisors is an integer number (19360000).

Almost surely, 2^76471921 is an apocalyptic number.

It is an amenable number.

76471921 is a deficient number, since it is larger than the sum of its proper divisors (968079).

76471921 is an equidigital number, since it uses as much as digits as its factorization.

76471921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968078.

The product of its digits is 21168, while the sum is 37.

The square root of 76471921 is about 8744.8225253575. The cubic root of 76471921 is about 424.4572929789.

The spelling of 76471921 in words is "seventy-six million, four hundred seventy-one thousand, nine hundred twenty-one".