64195560 has 384 divisors, whose sum is σ = 259459200. Its totient is φ = 13547520.

The previous prime is 64195559. The next prime is 64195567. The reversal of 64195560 is 6559146.

64195560 is a `hidden beast` number, since 6 + 4 + 1 + 95 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64195567) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1492899 + ... + 1492941.

It is an arithmetic number, because the mean of its divisors is an integer number (675675).

Almost surely, 2^64195560 is an apocalyptic number.

64195560 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 64195560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129729600).

64195560 is an abundant number, since it is smaller than the sum of its proper divisors (195263640).

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

64195560 is a wasteful number, since it uses less digits than its factorization.

64195560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 64195560 is about 8012.2131773936. The cubic root of 64195560 is about 400.4070023988.

The spelling of 64195560 in words is "sixty-four million, one hundred ninety-five thousand, five hundred sixty".