130656985 has 8 divisors (see below), whose sum is σ = 166011336. Its totient is φ = 98376960.

The previous prime is 130656979. The next prime is 130656989. The reversal of 130656985 is 589656031.

It can be written as a sum of positive squares in 4 ways, for example, as 2152089 + 128504896 = 1467^2 + 11336^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130656985 - 2⁹ = 130656473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130656989) 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, 768486 + ... + 768655.

It is an arithmetic number, because the mean of its divisors is an integer number (20751417).

Almost surely, 2^130656985 is an apocalyptic number.

It is an amenable number.

130656985 is a deficient number, since it is larger than the sum of its proper divisors (35354351).

130656985 is a wasteful number, since it uses less digits than its factorization.

130656985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537163.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 130656985 is about 11430.5286404435. The cubic root of 130656985 is about 507.4316408367.

The spelling of 130656985 in words is "one hundred thirty million, six hundred fifty-six thousand, nine hundred eighty-five".