71956650 has 48 divisors (see below), whose sum is σ = 186220224. Its totient is φ = 18353280.

The previous prime is 71956649. The next prime is 71956657. The reversal of 71956650 is 5665917.

It is a junction number, because it is equal to n+sod(n) for n = 71956599 and 71956608.

It is not an unprimeable number, because it can be changed into a prime (71956657) 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 23 ways as a sum of consecutive naturals, for example, 6979 + ... + 13878.

It is an arithmetic number, because the mean of its divisors is an integer number (3879588).

Almost surely, 2^71956650 is an apocalyptic number.

71956650 is an abundant number, since it is smaller than the sum of its proper divisors (114263574).

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

71956650 is a wasteful number, since it uses less digits than its factorization.

71956650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20895 (or 20890 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 71956650 is about 8482.7265663818. The cubic root of 71956650 is about 415.9332555949.

The spelling of 71956650 in words is "seventy-one million, nine hundred fifty-six thousand, six hundred fifty".