7654921 has 4 divisors (see below), whose sum is σ = 7689472. Its totient is φ = 7620372.

The previous prime is 7654919. The next prime is 7654939. The reversal of 7654921 is 1294567.

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 7654921 - 2¹ = 7654919 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7654901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16941 + ... + 17386.

It is an arithmetic number, because the mean of its divisors is an integer number (1922368).

Almost surely, 2^7654921 is an apocalyptic number.

It is an amenable number.

7654921 is a deficient number, since it is larger than the sum of its proper divisors (34551).

7654921 is a wasteful number, since it uses less digits than its factorization.

7654921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34550.

The product of its digits is 15120, while the sum is 34.

The square root of 7654921 is about 2766.7527898242. The cubic root of 7654921 is about 197.0819743535.

The spelling of 7654921 in words is "seven million, six hundred fifty-four thousand, nine hundred twenty-one".