2660072101 has 4 divisors (see below), whose sum is σ = 2673855052. Its totient is φ = 2646289152.

The previous prime is 2660072099. The next prime is 2660072119. The reversal of 2660072101 is 1012700662.

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 1917564100 + 742508001 = 43790^2 + 27249^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660072101 - 2¹ = 2660072099 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 (2660072131) 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, 6891186 + ... + 6891571.

It is an arithmetic number, because the mean of its divisors is an integer number (668463763).

Almost surely, 2^2660072101 is an apocalyptic number.

It is an amenable number.

2660072101 is a deficient number, since it is larger than the sum of its proper divisors (13782951).

2660072101 is a wasteful number, since it uses less digits than its factorization.

2660072101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13782950.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2660072101 is about 51575.8868173878. The cubic root of 2660072101 is about 1385.5785010066.

Adding to 2660072101 its reverse (1012700662), we get a palindrome (3672772763).

The spelling of 2660072101 in words is "two billion, six hundred sixty million, seventy-two thousand, one hundred one".