65195520 has 160 divisors (see below), whose sum is σ = 224798112. Its totient is φ = 16023552.

The previous prime is 65195513. The next prime is 65195521. The reversal of 65195520 is 2559156.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65195521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99514 + ... + 100166.

Almost surely, 2^65195520 is an apocalyptic number.

65195520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65195520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112399056).

65195520 is an abundant number, since it is smaller than the sum of its proper divisors (159602592).

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

65195520 is a wasteful number, since it uses less digits than its factorization.

65195520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 65195520 is about 8074.3742791624. The cubic root of 65195520 is about 402.4753170826.

The spelling of 65195520 in words is "sixty-five million, one hundred ninety-five thousand, five hundred twenty".