71607642 has 16 divisors (see below), whose sum is σ = 146546400. Its totient is φ = 23314032.

The previous prime is 71607629. The next prime is 71607643. The reversal of 71607642 is 24670617.

It is not an unprimeable number, because it can be changed into a prime (71607643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138517 + ... + 139032.

It is an arithmetic number, because the mean of its divisors is an integer number (9159150).

Almost surely, 2^71607642 is an apocalyptic number.

71607642 is an abundant number, since it is smaller than the sum of its proper divisors (74938758).

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

71607642 is a wasteful number, since it uses less digits than its factorization.

71607642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277597.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 71607642 is about 8462.1298737375. The cubic root of 71607642 is about 415.2597048656.

The spelling of 71607642 in words is "seventy-one million, six hundred seven thousand, six hundred forty-two".