65630149 has 8 divisors (see below), whose sum is σ = 74836440. Its totient is φ = 57017856.

The previous prime is 65630143. The next prime is 65630209. The reversal of 65630149 is 94103656.

It can be written as a sum of positive squares in 4 ways, for example, as 11607649 + 54022500 = 3407^2 + 7350^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 65630149 - 2⁷ = 65630021 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65630143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148264 + ... + 148705.

It is an arithmetic number, because the mean of its divisors is an integer number (9354555).

Almost surely, 2^65630149 is an apocalyptic number.

It is an amenable number.

65630149 is a deficient number, since it is larger than the sum of its proper divisors (9206291).

65630149 is a wasteful number, since it uses less digits than its factorization.

65630149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296999.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 65630149 is about 8101.2436699559. The cubic root of 65630149 is about 403.3677104926.

The spelling of 65630149 in words is "sixty-five million, six hundred thirty thousand, one hundred forty-nine".