1466663657 has 2 divisors, whose sum is σ = 1466663658. Its totient is φ = 1466663656.

The previous prime is 1466663591. The next prime is 1466663711. The reversal of 1466663657 is 7563666641.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1136296681 + 330366976 = 33709^2 + 18176^2 .

It is a cyclic number.

It is not a de Polignac number, because 1466663657 - 2¹⁰ = 1466662633 is a prime.

It is a super-2 number, since 2×1466663657² = 4302204565529227298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1466663857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 733331828 + 733331829.

It is an arithmetic number, because the mean of its divisors is an integer number (733331829).

Almost surely, 2^1466663657 is an apocalyptic number.

It is an amenable number.

1466663657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1466663657 is an equidigital number, since it uses as much as digits as its factorization.

1466663657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 50.

The square root of 1466663657 is about 38297.0450165545. The cubic root of 1466663657 is about 1136.1705034136.

The spelling of 1466663657 in words is "one billion, four hundred sixty-six million, six hundred sixty-three thousand, six hundred fifty-seven".