65648898 has 24 divisors (see below), whose sum is σ = 162559488. Its totient is φ = 18756792.

The previous prime is 65648897. The next prime is 65648903. The reversal of 65648898 is 89884656.

It is a happy number.

65648898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65648898² = 8619555617228808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65648897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 260386 + ... + 260637.

It is an arithmetic number, because the mean of its divisors is an integer number (6773312).

Almost surely, 2^65648898 is an apocalyptic number.

65648898 is an abundant number, since it is smaller than the sum of its proper divisors (96910590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65648898 is a wasteful number, since it uses less digits than its factorization.

65648898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521038 (or 521035 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 65648898 is about 8102.4007553317. The cubic root of 65648898 is about 403.4061177453.

The spelling of 65648898 in words is "sixty-five million, six hundred forty-eight thousand, eight hundred ninety-eight".