64350780 has 192 divisors, whose sum is σ = 215405568. Its totient is φ = 14192640.

The previous prime is 64350731. The next prime is 64350787. The reversal of 64350780 is 8705346.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64350787) 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, 304875 + ... + 305085.

It is an arithmetic number, because the mean of its divisors is an integer number (1121904).

Almost surely, 2^64350780 is an apocalyptic number.

64350780 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 64350780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107702784).

64350780 is an abundant number, since it is smaller than the sum of its proper divisors (151054788).

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

64350780 is a wasteful number, since it uses less digits than its factorization.

64350780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 64350780 is about 8021.8937913687. The cubic root of 64350780 is about 400.7294605762.

The spelling of 64350780 in words is "sixty-four million, three hundred fifty thousand, seven hundred eighty".