71670659 has 2 divisors, whose sum is σ = 71670660. Its totient is φ = 71670658.

The previous prime is 71670653. The next prime is 71670673. The reversal of 71670659 is 95607617.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71670659 is a prime.

It is a super-2 number, since 2×71670659² = 10273366722988562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71670653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35835329 + 35835330.

It is an arithmetic number, because the mean of its divisors is an integer number (35835330).

Almost surely, 2^71670659 is an apocalyptic number.

71670659 is a deficient number, since it is larger than the sum of its proper divisors (1).

71670659 is an equidigital number, since it uses as much as digits as its factorization.

71670659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 71670659 is about 8465.8525264736. The cubic root of 71670659 is about 415.3814830609.

The spelling of 71670659 in words is "seventy-one million, six hundred seventy thousand, six hundred fifty-nine".