1360690021 has 2 divisors, whose sum is σ = 1360690022. Its totient is φ = 1360690020.

The previous prime is 1360690007. The next prime is 1360690039. The reversal of 1360690021 is 1200960631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1353209796 + 7480225 = 36786^2 + 2735^2 .

It is a cyclic number.

It is not a de Polignac number, because 1360690021 - 2¹⁷ = 1360558949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1360690921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680345010 + 680345011.

It is an arithmetic number, because the mean of its divisors is an integer number (680345011).

Almost surely, 2^1360690021 is an apocalyptic number.

It is an amenable number.

1360690021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1360690021 is an equidigital number, since it uses as much as digits as its factorization.

1360690021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1360690021 is about 36887.5320535272. The cubic root of 1360690021 is about 1108.1189961668.

The spelling of 1360690021 in words is "one billion, three hundred sixty million, six hundred ninety thousand, twenty-one".