65236480 has 80 divisors (see below), whose sum is σ = 165726000. Its totient is φ = 24543232.

The previous prime is 65236469. The next prime is 65236489. The reversal of 65236480 is 8463256.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65236489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42771 + ... + 44269.

It is an arithmetic number, because the mean of its divisors is an integer number (2071575).

Almost surely, 2^65236480 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 65236480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82863000).

65236480 is an abundant number, since it is smaller than the sum of its proper divisors (100489520).

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

65236480 is a wasteful number, since it uses less digits than its factorization.

65236480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539 (or 1523 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 65236480 is about 8076.9103003562. The cubic root of 65236480 is about 402.5595863586.

The spelling of 65236480 in words is "sixty-five million, two hundred thirty-six thousand, four hundred eighty".