64850280 has 128 divisors (see below), whose sum is σ = 215464320. Its totient is φ = 15482880.

The previous prime is 64850273. The next prime is 64850297. The reversal of 64850280 is 8205846.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96024 + ... + 96696.

It is an arithmetic number, because the mean of its divisors is an integer number (1683315).

Almost surely, 2^64850280 is an apocalyptic number.

64850280 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 64850280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107732160).

64850280 is an abundant number, since it is smaller than the sum of its proper divisors (150614040).

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

64850280 is a wasteful number, since it uses less digits than its factorization.

64850280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 64850280 is about 8052.9671550305. The cubic root of 64850280 is about 401.7636292679.

The spelling of 64850280 in words is "sixty-four million, eight hundred fifty thousand, two hundred eighty".