71065330 has 32 divisors (see below), whose sum is σ = 150912000. Its totient is φ = 23578560.

The previous prime is 71065297. The next prime is 71065373. The reversal of 71065330 is 3356017.

It is a happy number.

It is a super-2 number, since 2×71065330² = 10100562256017800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71065295 and 71065304.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14205 + ... + 18544.

It is an arithmetic number, because the mean of its divisors is an integer number (4716000).

Almost surely, 2^71065330 is an apocalyptic number.

71065330 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71065330 is an abundant number, since it is smaller than the sum of its proper divisors (79846670).

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

71065330 is a wasteful number, since it uses less digits than its factorization.

71065330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32794.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 71065330 is about 8430.0255041133. The cubic root of 71065330 is about 414.2087405263.

The spelling of 71065330 in words is "seventy-one million, sixty-five thousand, three hundred thirty".