7670921 has 4 divisors (see below), whose sum is σ = 7700352. Its totient is φ = 7641492.

The previous prime is 7670903. The next prime is 7670941. The reversal of 7670921 is 1290767.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1290767 = 89 ⋅14503.

It is a cyclic number.

It is not a de Polignac number, because 7670921 - 2¹⁸ = 7408777 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 (7670941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14321 + ... + 14846.

It is an arithmetic number, because the mean of its divisors is an integer number (1925088).

Almost surely, 2^7670921 is an apocalyptic number.

It is an amenable number.

7670921 is a deficient number, since it is larger than the sum of its proper divisors (29431).

7670921 is a wasteful number, since it uses less digits than its factorization.

7670921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29430.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 7670921 is about 2769.6427567468. The cubic root of 7670921 is about 197.2191896673.

The spelling of 7670921 in words is "seven million, six hundred seventy thousand, nine hundred twenty-one".