71899364 has 6 divisors (see below), whose sum is σ = 125823894. Its totient is φ = 35949680.

The previous prime is 71899361. The next prime is 71899391. The reversal of 71899364 is 46399817.

It can be written as a sum of positive squares in only one way, i.e., 69588964 + 2310400 = 8342^2 + 1520^2 .

It is not an unprimeable number, because it can be changed into a prime (71899361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8987417 + ... + 8987424.

It is an arithmetic number, because the mean of its divisors is an integer number (20970649).

Almost surely, 2^71899364 is an apocalyptic number.

It is an amenable number.

71899364 is a deficient number, since it is larger than the sum of its proper divisors (53924530).

71899364 is a wasteful number, since it uses less digits than its factorization.

71899364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17974845 (or 17974843 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 71899364 is about 8479.3492674851. The cubic root of 71899364 is about 415.8228489433.

The spelling of 71899364 in words is "seventy-one million, eight hundred ninety-nine thousand, three hundred sixty-four".