71361620 has 48 divisors (see below), whose sum is σ = 164058048. Its totient is φ = 25858560.

The previous prime is 71361601. The next prime is 71361649. The reversal of 71361620 is 2616317.

It is a self number, because there is not a number n which added to its sum of digits gives 71361620.

It is a congruent number.

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, 120044 + ... + 120636.

It is an arithmetic number, because the mean of its divisors is an integer number (3417876).

Almost surely, 2^71361620 is an apocalyptic number.

It is an amenable number.

71361620 is an abundant number, since it is smaller than the sum of its proper divisors (92696428).

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

71361620 is a wasteful number, since it uses less digits than its factorization.

71361620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 71361620 is about 8447.5807187620. The cubic root of 71361620 is about 414.7835906577.

Adding to 71361620 its reverse (2616317), we get a palindrome (73977937).

The spelling of 71361620 in words is "seventy-one million, three hundred sixty-one thousand, six hundred twenty".