1064700643 has 2 divisors, whose sum is σ = 1064700644. Its totient is φ = 1064700642.

The previous prime is 1064700601. The next prime is 1064700653. The reversal of 1064700643 is 3460074601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1064700643 is a prime.

It is a super-2 number, since 2×1064700643² = 2267174918409226898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1064700653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532350321 + 532350322.

It is an arithmetic number, because the mean of its divisors is an integer number (532350322).

Almost surely, 2^1064700643 is an apocalyptic number.

1064700643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1064700643 is an equidigital number, since it uses as much as digits as its factorization.

1064700643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 1064700643 is about 32629.7508878018. The cubic root of 1064700643 is about 1021.1177810886.

The spelling of 1064700643 in words is "one billion, sixty-four million, seven hundred thousand, six hundred forty-three".