76717421 has 8 divisors (see below), whose sum is σ = 88096800. Its totient is φ = 66072240.

The previous prime is 76717409. The next prime is 76717423. The reversal of 76717421 is 12471767.

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 76717421 - 2¹⁸ = 76455277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76717423) 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, 183326 + ... + 183743.

It is an arithmetic number, because the mean of its divisors is an integer number (11012100).

Almost surely, 2^76717421 is an apocalyptic number.

It is an amenable number.

76717421 is a deficient number, since it is larger than the sum of its proper divisors (11379379).

76717421 is a wasteful number, since it uses less digits than its factorization.

76717421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367099.

The product of its digits is 16464, while the sum is 35.

The square root of 76717421 is about 8758.8481548660. The cubic root of 76717421 is about 424.9110235881.

The spelling of 76717421 in words is "seventy-six million, seven hundred seventeen thousand, four hundred twenty-one".