7667247661 has 8 divisors (see below), whose sum is σ = 7691512064. Its totient is φ = 7643002320.

The previous prime is 7667247647. The next prime is 7667247667. The reversal of 7667247661 is 1667427667.

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 7667247661 - 2⁹ = 7667247149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7667247599 and 7667247608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7667247667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1561336 + ... + 1566238.

It is an arithmetic number, because the mean of its divisors is an integer number (961439008).

Almost surely, 2^7667247661 is an apocalyptic number.

It is an amenable number.

7667247661 is a deficient number, since it is larger than the sum of its proper divisors (24264403).

7667247661 is a wasteful number, since it uses less digits than its factorization.

7667247661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9531.

The product of its digits is 3556224, while the sum is 52.

The square root of 7667247661 is about 87562.8212256777. The cubic root of 7667247661 is about 1971.8770415601.

It can be divided in two parts, 766 and 7247661, that added together give a palindrome (7248427).

The spelling of 7667247661 in words is "seven billion, six hundred sixty-seven million, two hundred forty-seven thousand, six hundred sixty-one".