65715552 has 144 divisors (see below), whose sum is σ = 219596832. Its totient is φ = 18247680.

The previous prime is 65715527. The next prime is 65715583. The reversal of 65715552 is 25551756.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74152 + ... + 75032.

It is an arithmetic number, because the mean of its divisors is an integer number (1524978).

Almost surely, 2^65715552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65715552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109798416).

65715552 is an abundant number, since it is smaller than the sum of its proper divisors (153881280).

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

65715552 is a wasteful number, since it uses less digits than its factorization.

65715552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 930 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 65715552 is about 8106.5129371389. The cubic root of 65715552 is about 403.5425990228.

The spelling of 65715552 in words is "sixty-five million, seven hundred fifteen thousand, five hundred fifty-two".