1065345961 has 2 divisors, whose sum is σ = 1065345962. Its totient is φ = 1065345960.

The previous prime is 1065345959. The next prime is 1065345991. The reversal of 1065345961 is 1695435601.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 880902400 + 184443561 = 29680^2 + 13581^2 .

It is a cyclic number.

It is not a de Polignac number, because 1065345961 - 2¹ = 1065345959 is a prime.

It is a super-2 number, since 2×1065345961² = 2269924033238027042, which contains 22 as substring.

Together with 1065345959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1065345991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532672980 + 532672981.

It is an arithmetic number, because the mean of its divisors is an integer number (532672981).

Almost surely, 2^1065345961 is an apocalyptic number.

It is an amenable number.

1065345961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065345961 is an equidigital number, since it uses as much as digits as its factorization.

1065345961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 1065345961 is about 32639.6378809570. The cubic root of 1065345961 is about 1021.3240401918.

The spelling of 1065345961 in words is "one billion, sixty-five million, three hundred forty-five thousand, nine hundred sixty-one".