1366366061 has 8 divisors (see below), whose sum is σ = 1371833400. Its totient is φ = 1360908288.

The previous prime is 1366366049. The next prime is 1366366091. The reversal of 1366366061 is 1606636631.

It can be written as a sum of positive squares in 4 ways, for example, as 518973961 + 847392100 = 22781^2 + 29110^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1366366061 - 2⁶ = 1366365997 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 (1366366091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423125 + ... + 426341.

It is an arithmetic number, because the mean of its divisors is an integer number (171479175).

Almost surely, 2^1366366061 is an apocalyptic number.

It is an amenable number.

1366366061 is a deficient number, since it is larger than the sum of its proper divisors (5467339).

1366366061 is a wasteful number, since it uses less digits than its factorization.

1366366061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4783.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 1366366061 is about 36964.3890927471. The cubic root of 1366366061 is about 1109.6576768156.

The spelling of 1366366061 in words is "one billion, three hundred sixty-six million, three hundred sixty-six thousand, sixty-one".