1006453661 has 2 divisors, whose sum is σ = 1006453662. Its totient is φ = 1006453660.

The previous prime is 1006453633. The next prime is 1006453673. The reversal of 1006453661 is 1663546001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 794168761 + 212284900 = 28181^2 + 14570^2 .

It is a cyclic number.

It is not a de Polignac number, because 1006453661 - 2¹⁸ = 1006191517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006453631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503226830 + 503226831.

It is an arithmetic number, because the mean of its divisors is an integer number (503226831).

Almost surely, 2^1006453661 is an apocalyptic number.

It is an amenable number.

1006453661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006453661 is an equidigital number, since it uses as much as digits as its factorization.

1006453661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1006453661 is about 31724.6538357789. The cubic root of 1006453661 is about 1002.1466091055.

Adding to 1006453661 its reverse (1663546001), we get a palindrome (2669999662).

The spelling of 1006453661 in words is "one billion, six million, four hundred fifty-three thousand, six hundred sixty-one".