71963408 has 40 divisors (see below), whose sum is σ = 154621056. Its totient is φ = 32169600.

The previous prime is 71963401. The next prime is 71963417. The reversal of 71963408 is 80436917.

It is not an unprimeable number, because it can be changed into a prime (71963401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7385 + ... + 14087.

Almost surely, 2^71963408 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 71963408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77310528).

71963408 is an abundant number, since it is smaller than the sum of its proper divisors (82657648).

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

71963408 is a wasteful number, since it uses less digits than its factorization.

71963408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6783 (or 6777 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 71963408 is about 8483.1248959331. The cubic root of 71963408 is about 415.9462763463.

The spelling of 71963408 in words is "seventy-one million, nine hundred sixty-three thousand, four hundred eight".