7690421 has 8 divisors (see below), whose sum is σ = 8284320. Its totient is φ = 7115472.

The previous prime is 7690399. The next prime is 7690433. The reversal of 7690421 is 1240967.

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 7690421 - 2⁶ = 7690357 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 (7690021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3890 + ... + 5523.

It is an arithmetic number, because the mean of its divisors is an integer number (1035540).

Almost surely, 2^7690421 is an apocalyptic number.

It is an amenable number.

7690421 is a deficient number, since it is larger than the sum of its proper divisors (593899).

7690421 is a wasteful number, since it uses less digits than its factorization.

7690421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9475.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 7690421 is about 2773.1608319750. The cubic root of 7690421 is about 197.3861631009.

The spelling of 7690421 in words is "seven million, six hundred ninety thousand, four hundred twenty-one".