71219668 has 24 divisors (see below), whose sum is σ = 134642592. Its totient is φ = 32767584.

The previous prime is 71219627. The next prime is 71219671. The reversal of 71219668 is 86691217.

It is a super-2 number, since 2×71219668² = 10144482220060448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71219668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16071 + ... + 20017.

It is an arithmetic number, because the mean of its divisors is an integer number (5610108).

Almost surely, 2^71219668 is an apocalyptic number.

It is an amenable number.

71219668 is a deficient number, since it is larger than the sum of its proper divisors (63422924).

71219668 is a wasteful number, since it uses less digits than its factorization.

71219668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311 (or 4309 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 71219668 is about 8439.1746041897. The cubic root of 71219668 is about 414.5083799573.

The spelling of 71219668 in words is "seventy-one million, two hundred nineteen thousand, six hundred sixty-eight".