71653896 has 192 divisors, whose sum is σ = 220147200. Its totient is φ = 21772800.

The previous prime is 71653853. The next prime is 71653903. The reversal of 71653896 is 69835617.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1747636 + ... + 1747676.

It is an arithmetic number, because the mean of its divisors is an integer number (1146600).

Almost surely, 2^71653896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71653896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110073600).

71653896 is an abundant number, since it is smaller than the sum of its proper divisors (148493304).

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

71653896 is a wasteful number, since it uses less digits than its factorization.

71653896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 106 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 71653896 is about 8464.8624324321. The cubic root of 71653896 is about 415.3490961082.

The spelling of 71653896 in words is "seventy-one million, six hundred fifty-three thousand, eight hundred ninety-six".