64782450 has 96 divisors (see below), whose sum is σ = 182488320. Its totient is φ = 16891200.

The previous prime is 64782407. The next prime is 64782451. The reversal of 64782450 is 5428746.

64782450 is a `hidden beast` number, since 647 + 8 + 2 + 4 + 5 + 0 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64782451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62940 + ... + 63960.

It is an arithmetic number, because the mean of its divisors is an integer number (1900920).

Almost surely, 2^64782450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64782450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91244160).

64782450 is an abundant number, since it is smaller than the sum of its proper divisors (117705870).

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

64782450 is a wasteful number, since it uses less digits than its factorization.

64782450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 64782450 is about 8048.7545620425. The cubic root of 64782450 is about 401.6235058238.

The spelling of 64782450 in words is "sixty-four million, seven hundred eighty-two thousand, four hundred fifty".