64876680 has 256 divisors, whose sum is σ = 243302400. Its totient is φ = 15240960.

The previous prime is 64876663. The next prime is 64876681. The reversal of 64876680 is 8667846.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (64876681) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 510777 + ... + 510903.

It is an arithmetic number, because the mean of its divisors is an integer number (950400).

Almost surely, 2^64876680 is an apocalyptic number.

64876680 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 64876680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121651200).

64876680 is an abundant number, since it is smaller than the sum of its proper divisors (178425720).

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

64876680 is a wasteful number, since it uses less digits than its factorization.

64876680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 64876680 is about 8054.6061356220. The cubic root of 64876680 is about 401.8181400624.

It can be divided in two parts, 648766 and 80, that added together give a palindrome (648846).

The spelling of 64876680 in words is "sixty-four million, eight hundred seventy-six thousand, six hundred eighty".