71151669 has 8 divisors (see below), whose sum is σ = 105409920. Its totient is φ = 47434428.

The previous prime is 71151631. The next prime is 71151671. The reversal of 71151669 is 96615117.

It is a happy number.

It is not a de Polignac number, because 71151669 - 2¹⁶ = 71086133 is a prime.

It is a super-2 number, since 2×71151669² = 10125120002971122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71151569) 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 in 7 ways as a sum of consecutive naturals, for example, 1317597 + ... + 1317650.

It is an arithmetic number, because the mean of its divisors is an integer number (13176240).

Almost surely, 2^71151669 is an apocalyptic number.

It is an amenable number.

71151669 is a deficient number, since it is larger than the sum of its proper divisors (34258251).

71151669 is a wasteful number, since it uses less digits than its factorization.

71151669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635256 (or 2635250 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 71151669 is about 8435.1448713107. The cubic root of 71151669 is about 414.3764167352.

The spelling of 71151669 in words is "seventy-one million, one hundred fifty-one thousand, six hundred sixty-nine".