71640848 has 10 divisors (see below), whose sum is σ = 138804174. Its totient is φ = 35820416.

The previous prime is 71640847. The next prime is 71640859. The reversal of 71640848 is 84804617.

It can be written as a sum of positive squares in only one way, i.e., 38093584 + 33547264 = 6172^2 + 5792^2 .

It is a super-2 number, since 2×71640848² = 10264822204318208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71640847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2238761 + ... + 2238792.

Almost surely, 2^71640848 is an apocalyptic number.

It is an amenable number.

71640848 is a deficient number, since it is larger than the sum of its proper divisors (67163326).

71640848 is a wasteful number, since it uses less digits than its factorization.

71640848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477561 (or 4477555 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 71640848 is about 8464.0916819231. The cubic root of 71640848 is about 415.3238832247.

The spelling of 71640848 in words is "seventy-one million, six hundred forty thousand, eight hundred forty-eight".