71622469 has 2 divisors, whose sum is σ = 71622470. Its totient is φ = 71622468.

The previous prime is 71622461. The next prime is 71622487. The reversal of 71622469 is 96422617.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71622369 + 100 = 8463^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 71622469 - 2³ = 71622461 is a prime.

It is a super-2 number, since 2×71622469² = 10259556131311922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71622461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35811234 + 35811235.

It is an arithmetic number, because the mean of its divisors is an integer number (35811235).

Almost surely, 2^71622469 is an apocalyptic number.

It is an amenable number.

71622469 is a deficient number, since it is larger than the sum of its proper divisors (1).

71622469 is an equidigital number, since it uses as much as digits as its factorization.

71622469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 71622469 is about 8463.0059080684. The cubic root of 71622469 is about 415.2883639610.

The spelling of 71622469 in words is "seventy-one million, six hundred twenty-two thousand, four hundred sixty-nine".