64653798 has 32 divisors (see below), whose sum is σ = 142531200. Its totient is φ = 19388160.

The previous prime is 64653791. The next prime is 64653803. The reversal of 64653798 is 89735646.

It is a super-2 number, since 2×64653798² = 8360227191649608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64653791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1353 + ... + 11451.

It is an arithmetic number, because the mean of its divisors is an integer number (4454100).

Almost surely, 2^64653798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64653798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71265600).

64653798 is an abundant number, since it is smaller than the sum of its proper divisors (77877402).

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

64653798 is a wasteful number, since it uses less digits than its factorization.

64653798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10212.

The product of its digits is 1088640, while the sum is 48.

The square root of 64653798 is about 8040.7585463064. The cubic root of 64653798 is about 401.3574671626.

The spelling of 64653798 in words is "sixty-four million, six hundred fifty-three thousand, seven hundred ninety-eight".