65130949 has 4 divisors (see below), whose sum is σ = 70141036. Its totient is φ = 60120864.

The previous prime is 65130943. The next prime is 65130959. The reversal of 65130949 is 94903156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32148900 + 32982049 = 5670^2 + 5743^2 .

It is a cyclic number.

It is not a de Polignac number, because 65130949 - 2¹⁷ = 64999877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65130943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2505024 + ... + 2505049.

It is an arithmetic number, because the mean of its divisors is an integer number (17535259).

Almost surely, 2^65130949 is an apocalyptic number.

It is an amenable number.

65130949 is a deficient number, since it is larger than the sum of its proper divisors (5010087).

65130949 is a wasteful number, since it uses less digits than its factorization.

65130949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5010086.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 65130949 is about 8070.3747744451. The cubic root of 65130949 is about 402.3423998812.

The spelling of 65130949 in words is "sixty-five million, one hundred thirty thousand, nine hundred forty-nine".