70995569 has 2 divisors, whose sum is σ = 70995570. Its totient is φ = 70995568.

The previous prime is 70995539. The next prime is 70995593. The reversal of 70995569 is 96559907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43296400 + 27699169 = 6580^2 + 5263^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70995569 is a prime.

It is a super-2 number, since 2×70995569² = 10080741635267522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70995539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35497784 + 35497785.

It is an arithmetic number, because the mean of its divisors is an integer number (35497785).

Almost surely, 2^70995569 is an apocalyptic number.

It is an amenable number.

70995569 is a deficient number, since it is larger than the sum of its proper divisors (1).

70995569 is an equidigital number, since it uses as much as digits as its factorization.

70995569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 765450, while the sum is 50.

The square root of 70995569 is about 8425.8868375976. The cubic root of 70995569 is about 414.0731606957.

The spelling of 70995569 in words is "seventy million, nine hundred ninety-five thousand, five hundred sixty-nine".