71276669 has 2 divisors, whose sum is σ = 71276670. Its totient is φ = 71276668.

The previous prime is 71276651. The next prime is 71276713. The reversal of 71276669 is 96667217.

It is an a-pointer prime, because the next prime (71276713) can be obtained adding 71276669 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69139225 + 2137444 = 8315^2 + 1462^2 .

It is a cyclic number.

It is not a de Polignac number, because 71276669 - 2¹² = 71272573 is a prime.

It is a super-2 number, since 2×71276669² = 10160727087471122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71276269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35638334 + 35638335.

It is an arithmetic number, because the mean of its divisors is an integer number (35638335).

Almost surely, 2^71276669 is an apocalyptic number.

It is an amenable number.

71276669 is a deficient number, since it is larger than the sum of its proper divisors (1).

71276669 is an equidigital number, since it uses as much as digits as its factorization.

71276669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 71276669 is about 8442.5510954924. The cubic root of 71276669 is about 414.6189350525.

The spelling of 71276669 in words is "seventy-one million, two hundred seventy-six thousand, six hundred sixty-nine".