71497916 has 12 divisors (see below), whose sum is σ = 142995888. Its totient is φ = 30641952.

The previous prime is 71497913. The next prime is 71497919. The reversal of 71497916 is 61979417.

It is an interprime number because it is at equal distance from previous prime (71497913) and next prime (71497919).

71497916 is an admirable number.

It is a super-2 number, since 2×71497916² = 10223903984686112, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71497913) 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 3 ways as a sum of consecutive naturals, for example, 1276721 + ... + 1276776.

It is an arithmetic number, because the mean of its divisors is an integer number (11916324).

Almost surely, 2^71497916 is an apocalyptic number.

It is an amenable number.

71497916 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71497916 is a wasteful number, since it uses less digits than its factorization.

71497916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553508 (or 2553506 counting only the distinct ones).

The product of its digits is 95256, while the sum is 44.

The square root of 71497916 is about 8455.6440322426. The cubic root of 71497916 is about 415.0474925083.

The spelling of 71497916 in words is "seventy-one million, four hundred ninety-seven thousand, nine hundred sixteen".