7070621 has 4 divisors (see below), whose sum is σ = 7143612. Its totient is φ = 6997632.

The previous prime is 7070611. The next prime is 7070627. The reversal of 7070621 is 1260707.

It is a happy number.

7070621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1243225 + 5827396 = 1115^2 + 2414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7070621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7070627) 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, 36350 + ... + 36543.

It is an arithmetic number, because the mean of its divisors is an integer number (1785903).

Almost surely, 2^7070621 is an apocalyptic number.

It is an amenable number.

7070621 is a deficient number, since it is larger than the sum of its proper divisors (72991).

7070621 is an equidigital number, since it uses as much as digits as its factorization.

7070621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72990.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 7070621 is about 2659.0639330411. The cubic root of 7070621 is about 191.9342675015.

The spelling of 7070621 in words is "seven million, seventy thousand, six hundred twenty-one".