7671421 has 8 divisors (see below), whose sum is σ = 8208800. Its totient is φ = 7147440.

The previous prime is 7671413. The next prime is 7671451. The reversal of 7671421 is 1241767.

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 7671421 - 2³ = 7671413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7671421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7671451) 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, 2151 + ... + 4468.

It is an arithmetic number, because the mean of its divisors is an integer number (1026100).

Almost surely, 2^7671421 is an apocalyptic number.

It is an amenable number.

7671421 is a deficient number, since it is larger than the sum of its proper divisors (537379).

7671421 is a wasteful number, since it uses less digits than its factorization.

7671421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6699.

The product of its digits is 2352, while the sum is 28.

The square root of 7671421 is about 2769.7330196248. The cubic root of 7671421 is about 197.2234745701.

The spelling of 7671421 in words is "seven million, six hundred seventy-one thousand, four hundred twenty-one".