7666101001 has 4 divisors (see below), whose sum is σ = 8255801092. Its totient is φ = 7076400912.

The previous prime is 7666100971. The next prime is 7666101013. The reversal of 7666101001 is 1001016667.

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 5057343225 + 2608757776 = 71115^2 + 51076^2 .

It is a cyclic number.

It is not a de Polignac number, because 7666101001 - 2¹⁵ = 7666068233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7666101701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294850026 + ... + 294850051.

It is an arithmetic number, because the mean of its divisors is an integer number (2063950273).

Almost surely, 2^7666101001 is an apocalyptic number.

It is an amenable number.

7666101001 is a deficient number, since it is larger than the sum of its proper divisors (589700091).

7666101001 is a wasteful number, since it uses less digits than its factorization.

7666101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589700090.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 7666101001 is about 87556.2733389219. The cubic root of 7666101001 is about 1971.7787366075.

Adding to 7666101001 its reverse (1001016667), we get a palindrome (8667117668).

The spelling of 7666101001 in words is "seven billion, six hundred sixty-six million, one hundred one thousand, one".