65648953 has 8 divisors (see below), whose sum is σ = 68373000. Its totient is φ = 62955648.

The previous prime is 65648941. The next prime is 65648959. The reversal of 65648953 is 35984656.

It can be written as a sum of positive squares in 4 ways, for example, as 15904144 + 49744809 = 3988^2 + 7053^2 .

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 65648953 - 2²¹ = 63551801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65648959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3276 + ... + 11917.

It is an arithmetic number, because the mean of its divisors is an integer number (8546625).

Almost surely, 2^65648953 is an apocalyptic number.

It is an amenable number.

65648953 is a deficient number, since it is larger than the sum of its proper divisors (2724047).

65648953 is a wasteful number, since it uses less digits than its factorization.

65648953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15371.

The product of its digits is 777600, while the sum is 46.

The square root of 65648953 is about 8102.4041493868. The cubic root of 65648953 is about 403.4062304018.

The spelling of 65648953 in words is "sixty-five million, six hundred forty-eight thousand, nine hundred fifty-three".