65970538 has 16 divisors (see below), whose sum is σ = 101458440. Its totient is φ = 32161536.

The previous prime is 65970533. The next prime is 65970539. The reversal of 65970538 is 83507956.

It can be written as a sum of positive squares in 4 ways, for example, as 62932489 + 3038049 = 7933^2 + 1743^2 .

It is a super-3 number, since 3×65970538³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 65970494 and 65970503.

It is not an unprimeable number, because it can be changed into a prime (65970533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10456 + ... + 15532.

Almost surely, 2^65970538 is an apocalyptic number.

65970538 is a deficient number, since it is larger than the sum of its proper divisors (35487902).

65970538 is a wasteful number, since it uses less digits than its factorization.

65970538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5241.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 65970538 is about 8122.2249414800. The cubic root of 65970538 is about 404.0638602773.

The spelling of 65970538 in words is "sixty-five million, nine hundred seventy thousand, five hundred thirty-eight".