7670521 has 4 divisors (see below), whose sum is σ = 7687552. Its totient is φ = 7653492.

The previous prime is 7670503. The next prime is 7670527. The reversal of 7670521 is 1250767.

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: 1250767 = 7 ⋅178681.

It is a cyclic number.

It is not a de Polignac number, because 7670521 - 2⁵ = 7670489 is a prime.

It is a super-2 number, since 2×7670521² = 117673784822882, which contains 22 as substring.

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

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 7670521.

It is not an unprimeable number, because it can be changed into a prime (7670527) 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 3 ways as a sum of consecutive naturals, for example, 7821 + ... + 8746.

It is an arithmetic number, because the mean of its divisors is an integer number (1921888).

Almost surely, 2^7670521 is an apocalyptic number.

It is an amenable number.

7670521 is a deficient number, since it is larger than the sum of its proper divisors (17031).

7670521 is a wasteful number, since it uses less digits than its factorization.

7670521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17030.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 7670521 is about 2769.5705443263. The cubic root of 7670521 is about 197.2157616110.

The spelling of 7670521 in words is "seven million, six hundred seventy thousand, five hundred twenty-one".