65467649 has 4 divisors (see below), whose sum is σ = 70503636. Its totient is φ = 60431664.

The previous prime is 65467613. The next prime is 65467657. The reversal of 65467649 is 94676456.

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 42667024 + 22800625 = 6532^2 + 4775^2 .

It is a cyclic number.

It is not a de Polignac number, because 65467649 - 2²⁰ = 64419073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65467679) 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, 2517974 + ... + 2517999.

It is an arithmetic number, because the mean of its divisors is an integer number (17625909).

Almost surely, 2^65467649 is an apocalyptic number.

It is an amenable number.

65467649 is a deficient number, since it is larger than the sum of its proper divisors (5035987).

65467649 is a wasteful number, since it uses less digits than its factorization.

65467649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5035986.

The product of its digits is 1088640, while the sum is 47.

The square root of 65467649 is about 8091.2081298160. The cubic root of 65467649 is about 403.0345230437.

The spelling of 65467649 in words is "sixty-five million, four hundred sixty-seven thousand, six hundred forty-nine".