65971090 has 16 divisors (see below), whose sum is σ = 118917720. Its totient is φ = 26350720.

The previous prime is 65971063. The next prime is 65971109. The reversal of 65971090 is 9017956.

It can be written as a sum of positive squares in 4 ways, for example, as 28185481 + 37785609 = 5309^2 + 6147^2 .

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, 3276 + ... + 11944.

Almost surely, 2^65971090 is an apocalyptic number.

65971090 is a deficient number, since it is larger than the sum of its proper divisors (52946630).

65971090 is a wasteful number, since it uses less digits than its factorization.

65971090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9437.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 65971090 is about 8122.2589222457. The cubic root of 65971090 is about 404.0649872583.

The spelling of 65971090 in words is "sixty-five million, nine hundred seventy-one thousand, ninety".