7017661 has 4 divisors (see below), whose sum is σ = 8020192. Its totient is φ = 6015132.

The previous prime is 7017653. The next prime is 7017667. The reversal of 7017661 is 1667107.

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: 1667107 = 13 ⋅128239.

It is a cyclic number.

It is not a de Polignac number, because 7017661 - 2³ = 7017653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7017667) 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, 501255 + ... + 501268.

It is an arithmetic number, because the mean of its divisors is an integer number (2005048).

Almost surely, 2^7017661 is an apocalyptic number.

It is an amenable number.

7017661 is a deficient number, since it is larger than the sum of its proper divisors (1002531).

7017661 is a wasteful number, since it uses less digits than its factorization.

7017661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002530.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 7017661 is about 2649.0868237942. The cubic root of 7017661 is about 191.4538606810.

The spelling of 7017661 in words is "seven million, seventeen thousand, six hundred sixty-one".