1301666701 has 2 divisors, whose sum is σ = 1301666702. Its totient is φ = 1301666700.

The previous prime is 1301666677. The next prime is 1301666713. The reversal of 1301666701 is 1076661031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1290677476 + 10989225 = 35926^2 + 3315^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301666701 - 2²¹ = 1299569549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301666731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650833350 + 650833351.

It is an arithmetic number, because the mean of its divisors is an integer number (650833351).

Almost surely, 2^1301666701 is an apocalyptic number.

It is an amenable number.

1301666701 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301666701 is an equidigital number, since it uses as much as digits as its factorization.

1301666701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1301666701 is about 36078.6183355183. The cubic root of 1301666701 is about 1091.8591006984.

The spelling of 1301666701 in words is "one billion, three hundred one million, six hundred sixty-six thousand, seven hundred one".