64680308 has 72 divisors (see below), whose sum is σ = 150687936. Its totient is φ = 23696640.

The previous prime is 64680307. The next prime is 64680349. The reversal of 64680308 is 80308646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64680307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57035 + ... + 58157.

It is an arithmetic number, because the mean of its divisors is an integer number (2092888).

Almost surely, 2^64680308 is an apocalyptic number.

64680308 is a gapful number since it is divisible by the number (68) 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 64680308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75343968).

64680308 is an abundant number, since it is smaller than the sum of its proper divisors (86007628).

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

64680308 is a wasteful number, since it uses less digits than its factorization.

64680308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173 (or 1160 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 64680308 is about 8042.4068536726. The cubic root of 64680308 is about 401.4123158741.

The spelling of 64680308 in words is "sixty-four million, six hundred eighty thousand, three hundred eight".