71609450 has 24 divisors (see below), whose sum is σ = 145303200. Its totient is φ = 26039600.

The previous prime is 71609449. The next prime is 71609477. The reversal of 71609450 is 5490617.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 64550 + ... + 65649.

It is an arithmetic number, because the mean of its divisors is an integer number (6054300).

Almost surely, 2^71609450 is an apocalyptic number.

71609450 is an abundant number, since it is smaller than the sum of its proper divisors (73693750).

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

71609450 is a wasteful number, since it uses less digits than its factorization.

71609450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130222 (or 130217 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 71609450 is about 8462.2367019601. The cubic root of 71609450 is about 415.2631997590.

The spelling of 71609450 in words is "seventy-one million, six hundred nine thousand, four hundred fifty".