65764608 has 144 divisors (see below), whose sum is σ = 215650176. Its totient is φ = 17326080.

The previous prime is 65764607. The next prime is 65764627. The reversal of 65764608 is 80646756.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 65764608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65764603) 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, 69418 + ... + 70358.

Almost surely, 2^65764608 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 65764608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107825088).

65764608 is an abundant number, since it is smaller than the sum of its proper divisors (149885568).

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

65764608 is a wasteful number, since it uses less digits than its factorization.

65764608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 65764608 is about 8109.5380879554. The cubic root of 65764608 is about 403.6429875473.

The spelling of 65764608 in words is "sixty-five million, seven hundred sixty-four thousand, six hundred eight".