65648375 has 32 divisors (see below), whose sum is σ = 89631360. Its totient is φ = 47712000.

The previous prime is 65648369. The next prime is 65648381. The reversal of 65648375 is 57384656.

It is an interprime number because it is at equal distance from previous prime (65648369) and next prime (65648381).

It is not a de Polignac number, because 65648375 - 2⁸ = 65648119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115091 + ... + 115659.

It is an arithmetic number, because the mean of its divisors is an integer number (2800980).

Almost surely, 2^65648375 is an apocalyptic number.

65648375 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65648375 is a deficient number, since it is larger than the sum of its proper divisors (23982985).

65648375 is a wasteful number, since it uses less digits than its factorization.

65648375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 658 counting only the distinct ones).

The product of its digits is 604800, while the sum is 44.

The square root of 65648375 is about 8102.3684808826. The cubic root of 65648375 is about 403.4050464810.

The spelling of 65648375 in words is "sixty-five million, six hundred forty-eight thousand, three hundred seventy-five".