1164000661 has 2 divisors, whose sum is σ = 1164000662. Its totient is φ = 1164000660.

The previous prime is 1164000601. The next prime is 1164000671. The reversal of 1164000661 is 1660004611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 987907761 + 176092900 = 31431^2 + 13270^2 .

It is a cyclic number.

It is not a de Polignac number, because 1164000661 - 2¹¹ = 1163998613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1164000601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582000330 + 582000331.

It is an arithmetic number, because the mean of its divisors is an integer number (582000331).

Almost surely, 2^1164000661 is an apocalyptic number.

It is an amenable number.

1164000661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1164000661 is an equidigital number, since it uses as much as digits as its factorization.

1164000661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1164000661 is about 34117.4539055891. The cubic root of 1164000661 is about 1051.9241094348.

The spelling of 1164000661 in words is "one billion, one hundred sixty-four million, six hundred sixty-one", and thus it is an aban number.