7075621 has 16 divisors (see below), whose sum is σ = 8798976. Its totient is φ = 5550336.

The previous prime is 7075613. The next prime is 7075633. The reversal of 7075621 is 1265707.

It is a cyclic number.

It is not a de Polignac number, because 7075621 - 2³ = 7075613 is a prime.

It is an Ulam number.

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 7075621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7075661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3600 + ... + 5206.

It is an arithmetic number, because the mean of its divisors is an integer number (549936).

Almost surely, 2^7075621 is an apocalyptic number.

It is an amenable number.

7075621 is a deficient number, since it is larger than the sum of its proper divisors (1723355).

7075621 is a wasteful number, since it uses less digits than its factorization.

7075621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668.

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

The square root of 7075621 is about 2660.0039473655. The cubic root of 7075621 is about 191.9794990408.

It can be divided in two parts, 707 and 5621, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 7075621 in words is "seven million, seventy-five thousand, six hundred twenty-one".