71619066 has 40 divisors (see below), whose sum is σ = 161007924. Its totient is φ = 23794560.

The previous prime is 71619029. The next prime is 71619071. The reversal of 71619066 is 66091617.

It can be written as a sum of positive squares in 2 ways, for example, as 69305625 + 2313441 = 8325^2 + 1521^2 .

It is a super-2 number, since 2×71619066² = 10258581229424712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71619066.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 69636 + ... + 70656.

Almost surely, 2^71619066 is an apocalyptic number.

71619066 is an abundant number, since it is smaller than the sum of its proper divisors (89388858).

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

71619066 is a wasteful number, since it uses less digits than its factorization.

71619066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468 (or 1459 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 71619066 is about 8462.8048541840. The cubic root of 71619066 is about 415.2817866550.

The spelling of 71619066 in words is "seventy-one million, six hundred nineteen thousand, sixty-six".