7661713 has 8 divisors (see below), whose sum is σ = 8392680. Its totient is φ = 6961920.

The previous prime is 7661707. The next prime is 7661723. The reversal of 7661713 is 3171667.

7661713 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3196944 + 4464769 = 1788^2 + 2113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7661713 - 2¹⁷ = 7530641 is a prime.

It is a Duffinian number.

7661713 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7661723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7278 + ... + 8263.

It is an arithmetic number, because the mean of its divisors is an integer number (1049085).

Almost surely, 2^7661713 is an apocalyptic number.

It is an amenable number.

7661713 is a deficient number, since it is larger than the sum of its proper divisors (730967).

7661713 is a wasteful number, since it uses less digits than its factorization.

7661713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15587.

The product of its digits is 5292, while the sum is 31.

The square root of 7661713 is about 2767.9799493493. The cubic root of 7661713 is about 197.1402455871.

The spelling of 7661713 in words is "seven million, six hundred sixty-one thousand, seven hundred thirteen".