71217464 has 8 divisors (see below), whose sum is σ = 133532760. Its totient is φ = 35608728.

The previous prime is 71217457. The next prime is 71217467. The reversal of 71217464 is 46471217.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 71217464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71217467) 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, 4451084 + ... + 4451099.

It is an arithmetic number, because the mean of its divisors is an integer number (16691595).

Almost surely, 2^71217464 is an apocalyptic number.

It is an amenable number.

71217464 is a deficient number, since it is larger than the sum of its proper divisors (62315296).

71217464 is a wasteful number, since it uses less digits than its factorization.

71217464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8902189 (or 8902185 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

The square root of 71217464 is about 8439.0440216887. The cubic root of 71217464 is about 414.5041040509.

The spelling of 71217464 in words is "seventy-one million, two hundred seventeen thousand, four hundred sixty-four".