71869620 has 24 divisors (see below), whose sum is σ = 201235104. Its totient is φ = 19165216.

The previous prime is 71869607. The next prime is 71869649. The reversal of 71869620 is 2696817.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598854 + ... + 598973.

It is an arithmetic number, because the mean of its divisors is an integer number (8384796).

Almost surely, 2^71869620 is an apocalyptic number.

It is an amenable number.

71869620 is an abundant number, since it is smaller than the sum of its proper divisors (129365484).

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

71869620 is a wasteful number, since it uses less digits than its factorization.

71869620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197839 (or 1197837 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 71869620 is about 8477.5951778792. The cubic root of 71869620 is about 415.7655005420.

The spelling of 71869620 in words is "seventy-one million, eight hundred sixty-nine thousand, six hundred twenty".