1014775661 has 2 divisors, whose sum is σ = 1014775662. Its totient is φ = 1014775660.

The previous prime is 1014775639. The next prime is 1014775691. The reversal of 1014775661 is 1665774101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 772506436 + 242269225 = 27794^2 + 15565^2 .

It is an emirp because it is prime and its reverse (1665774101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1014775661 - 2¹⁸ = 1014513517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1014775621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507387830 + 507387831.

It is an arithmetic number, because the mean of its divisors is an integer number (507387831).

Almost surely, 2^1014775661 is an apocalyptic number.

It is an amenable number.

1014775661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1014775661 is an equidigital number, since it uses as much as digits as its factorization.

1014775661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 1014775661 is about 31855.5436462792. The cubic root of 1014775661 is about 1004.9011597225.

The spelling of 1014775661 in words is "one billion, fourteen million, seven hundred seventy-five thousand, six hundred sixty-one".