65648951 has 6 divisors (see below), whose sum is σ = 69738120. Its totient is φ = 61786976.

The previous prime is 65648941. The next prime is 65648959. The reversal of 65648951 is 15984656.

It is not a de Polignac number, because 65648951 - 2¹⁰ = 65647927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65648959) 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 5 ways as a sum of consecutive naturals, for example, 113291 + ... + 113868.

It is an arithmetic number, because the mean of its divisors is an integer number (11623020).

Almost surely, 2^65648951 is an apocalyptic number.

65648951 is a deficient number, since it is larger than the sum of its proper divisors (4089169).

65648951 is a wasteful number, since it uses less digits than its factorization.

65648951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227193 (or 227176 counting only the distinct ones).

The product of its digits is 259200, while the sum is 44.

The square root of 65648951 is about 8102.4040259666. The cubic root of 65648951 is about 403.4062263052.

The spelling of 65648951 in words is "sixty-five million, six hundred forty-eight thousand, nine hundred fifty-one".