1061645567 has 2 divisors, whose sum is σ = 1061645568. Its totient is φ = 1061645566.

The previous prime is 1061645531. The next prime is 1061645581. The reversal of 1061645567 is 7655461601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1061645567 - 2¹⁶ = 1061580031 is a prime.

It is a super-2 number, since 2×1061645567² = 2254182619861502978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061647567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530822783 + 530822784.

It is an arithmetic number, because the mean of its divisors is an integer number (530822784).

Almost surely, 2^1061645567 is an apocalyptic number.

1061645567 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061645567 is an equidigital number, since it uses as much as digits as its factorization.

1061645567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 1061645567 is about 32582.9029860754. The cubic root of 1061645567 is about 1020.1401726494.

The spelling of 1061645567 in words is "one billion, sixty-one million, six hundred forty-five thousand, five hundred sixty-seven".