1005605651 has 2 divisors, whose sum is σ = 1005605652. Its totient is φ = 1005605650.

The previous prime is 1005605633. The next prime is 1005605669. The reversal of 1005605651 is 1565065001.

It is a balanced prime because it is at equal distance from previous prime (1005605633) and next prime (1005605669).

It is a cyclic number.

It is not a de Polignac number, because 1005605651 - 2¹⁴ = 1005589267 is a prime.

It is a super-2 number, since 2×1005605651² = 2022485450646267602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1005605681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502802825 + 502802826.

It is an arithmetic number, because the mean of its divisors is an integer number (502802826).

Almost surely, 2^1005605651 is an apocalyptic number.

1005605651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005605651 is an equidigital number, since it uses as much as digits as its factorization.

1005605651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1005605651 is about 31711.2858616613. The cubic root of 1005605651 is about 1001.8650696859.

The spelling of 1005605651 in words is "one billion, five million, six hundred five thousand, six hundred fifty-one".