65088649 has 4 divisors (see below), whose sum is σ = 65759764. Its totient is φ = 64417536.

The previous prime is 65088641. The next prime is 65088679. The reversal of 65088649 is 94688056.

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 53392249 + 11696400 = 7307^2 + 3420^2 .

It is a cyclic number.

It is not a de Polignac number, because 65088649 - 2³ = 65088641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65088599 and 65088608.

It is not an unprimeable number, because it can be changed into a prime (65088641) 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, 335412 + ... + 335605.

It is an arithmetic number, because the mean of its divisors is an integer number (16439941).

Almost surely, 2^65088649 is an apocalyptic number.

It is an amenable number.

65088649 is a deficient number, since it is larger than the sum of its proper divisors (671115).

65088649 is an equidigital number, since it uses as much as digits as its factorization.

65088649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671114.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 65088649 is about 8067.7536526595. The cubic root of 65088649 is about 402.2552791421.

The spelling of 65088649 in words is "sixty-five million, eighty-eight thousand, six hundred forty-nine".