64266768 has 120 divisors (see below), whose sum is σ = 187675488. Its totient is φ = 20514816.

The previous prime is 64266767. The next prime is 64266809. The reversal of 64266768 is 86766246.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (580608) is a multiple of the sum of its prime divisors (252).

It is not an unprimeable number, because it can be changed into a prime (64266767) 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, 600571 + ... + 600677.

Almost surely, 2^64266768 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 64266768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93837744).

64266768 is an abundant number, since it is smaller than the sum of its proper divisors (123408720).

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

64266768 is a wasteful number, since it uses less digits than its factorization.

64266768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 252 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 64266768 is about 8016.6556618081. The cubic root of 64266768 is about 400.5549962584.

The spelling of 64266768 in words is "sixty-four million, two hundred sixty-six thousand, seven hundred sixty-eight".