7691421 has 8 divisors (see below), whose sum is σ = 10361344. Its totient is φ = 5074560.

The previous prime is 7691419. The next prime is 7691443. The reversal of 7691421 is 1241967.

It is a happy number.

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

It is not a de Polignac number, because 7691421 - 2¹ = 7691419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7691401) 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, 12925 + ... + 13506.

It is an arithmetic number, because the mean of its divisors is an integer number (1295168).

Almost surely, 2^7691421 is an apocalyptic number.

It is an amenable number.

7691421 is a deficient number, since it is larger than the sum of its proper divisors (2669923).

7691421 is a wasteful number, since it uses less digits than its factorization.

7691421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26531.

The product of its digits is 3024, while the sum is 30.

The square root of 7691421 is about 2773.3411257903. The cubic root of 7691421 is about 197.3947182289.

The spelling of 7691421 in words is "seven million, six hundred ninety-one thousand, four hundred twenty-one".