65880130 has 32 divisors (see below), whose sum is σ = 120682224. Its totient is φ = 25890816.

The previous prime is 65880121. The next prime is 65880173. The reversal of 65880130 is 3108856.

65880130 = 18² + 19² + ... + 582².

It can be written as a sum of positive squares in 8 ways, for example, as 15626209 + 50253921 = 3953^2 + 7089^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65880092 and 65880101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195322 + ... + 195658.

Almost surely, 2^65880130 is an apocalyptic number.

65880130 is a deficient number, since it is larger than the sum of its proper divisors (54802094).

65880130 is a wasteful number, since it uses less digits than its factorization.

65880130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 65880130 is about 8116.6575633077. The cubic root of 65880130 is about 403.8791954918.

Adding to 65880130 its reverse (3108856), we get a palindrome (68988986).

The spelling of 65880130 in words is "sixty-five million, eight hundred eighty thousand, one hundred thirty".