65632449 has 4 divisors (see below), whose sum is σ = 87509936. Its totient is φ = 43754964.

The previous prime is 65632447. The next prime is 65632493. The reversal of 65632449 is 94423656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65632449 - 2¹ = 65632447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65632447) 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, 10938739 + ... + 10938744.

It is an arithmetic number, because the mean of its divisors is an integer number (21877484).

Almost surely, 2^65632449 is an apocalyptic number.

It is an amenable number.

65632449 is a deficient number, since it is larger than the sum of its proper divisors (21877487).

65632449 is a wasteful number, since it uses less digits than its factorization.

65632449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21877486.

The product of its digits is 155520, while the sum is 39.

The square root of 65632449 is about 8101.3856222254. The cubic root of 65632449 is about 403.3724224271.

The spelling of 65632449 in words is "sixty-five million, six hundred thirty-two thousand, four hundred forty-nine".