65670071 has 2 divisors, whose sum is σ = 65670072. Its totient is φ = 65670070.

The previous prime is 65670053. The next prime is 65670089. The reversal of 65670071 is 17007656.

It is a balanced prime because it is at equal distance from previous prime (65670053) and next prime (65670089).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65670071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65670001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32835035 + 32835036.

It is an arithmetic number, because the mean of its divisors is an integer number (32835036).

Almost surely, 2^65670071 is an apocalyptic number.

65670071 is a deficient number, since it is larger than the sum of its proper divisors (1).

65670071 is an equidigital number, since it uses as much as digits as its factorization.

65670071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 65670071 is about 8103.7072380485. The cubic root of 65670071 is about 403.4494817616.

The spelling of 65670071 in words is "sixty-five million, six hundred seventy thousand, seventy-one".