1071661699 has 2 divisors, whose sum is σ = 1071661700. Its totient is φ = 1071661698.

The previous prime is 1071661667. The next prime is 1071661733. The reversal of 1071661699 is 9961661701.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1071661699 - 2⁵ = 1071661667 is a prime.

It is a super-2 number, since 2×1071661699² = 2296917594207133202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1071661399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535830849 + 535830850.

It is an arithmetic number, because the mean of its divisors is an integer number (535830850).

Almost surely, 2^1071661699 is an apocalyptic number.

1071661699 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071661699 is an equidigital number, since it uses as much as digits as its factorization.

1071661699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 1071661699 is about 32736.2444241853. The cubic root of 1071661699 is about 1023.3383186021.

The spelling of 1071661699 in words is "one billion, seventy-one million, six hundred sixty-one thousand, six hundred ninety-nine".