7077661 has 4 divisors (see below), whose sum is σ = 7494012. Its totient is φ = 6661312.

The previous prime is 7077617. The next prime is 7077667. The reversal of 7077661 is 1667707.

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 3728761 + 3348900 = 1931^2 + 1830^2 .

It is a cyclic number.

It is not a de Polignac number, because 7077661 - 2⁹ = 7077149 is a prime.

It is a Duffinian number.

7077661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7077667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208150 + ... + 208183.

It is an arithmetic number, because the mean of its divisors is an integer number (1873503).

Almost surely, 2^7077661 is an apocalyptic number.

It is an amenable number.

7077661 is a deficient number, since it is larger than the sum of its proper divisors (416351).

7077661 is a wasteful number, since it uses less digits than its factorization.

7077661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416350.

The product of its (nonzero) digits is 12348, while the sum is 34.

The square root of 7077661 is about 2660.3873778080. The cubic root of 7077661 is about 191.9979473884.

The spelling of 7077661 in words is "seven million, seventy-seven thousand, six hundred sixty-one".