2661210701 has 2 divisors, whose sum is σ = 2661210702. Its totient is φ = 2661210700.

The previous prime is 2661210689. The next prime is 2661210749. The reversal of 2661210701 is 1070121662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1528888201 + 1132322500 = 39101^2 + 33650^2 .

It is a cyclic number.

It is not a de Polignac number, because 2661210701 - 2¹⁴ = 2661194317 is a prime.

It is a super-2 number, since 2×2661210701² = 14164084790233822802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2661210301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330605350 + 1330605351.

It is an arithmetic number, because the mean of its divisors is an integer number (1330605351).

Almost surely, 2^2661210701 is an apocalyptic number.

It is an amenable number.

2661210701 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661210701 is an equidigital number, since it uses as much as digits as its factorization.

2661210701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 2661210701 is about 51586.9237404209. The cubic root of 2661210701 is about 1385.7761641504.

The spelling of 2661210701 in words is "two billion, six hundred sixty-one million, two hundred ten thousand, seven hundred one".