7006621 has 2 divisors, whose sum is σ = 7006622. Its totient is φ = 7006620.

The previous prime is 7006607. The next prime is 7006627. The reversal of 7006621 is 1266007.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6687396 + 319225 = 2586^2 + 565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7006621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7006592 and 7006601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7006627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3503310 + 3503311.

It is an arithmetic number, because the mean of its divisors is an integer number (3503311).

Almost surely, 2^7006621 is an apocalyptic number.

It is an amenable number.

7006621 is a deficient number, since it is larger than the sum of its proper divisors (1).

7006621 is an equidigital number, since it uses as much as digits as its factorization.

7006621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 7006621 is about 2647.0022667161. The cubic root of 7006621 is about 191.3534112592.

The spelling of 7006621 in words is "seven million, six thousand, six hundred twenty-one".