64418850 has 144 divisors (see below), whose sum is σ = 183584232. Its totient is φ = 16174080.

The previous prime is 64418839. The next prime is 64418869. The reversal of 64418850 is 5881446.

64418850 is a `hidden beast` number, since 644 + 1 + 8 + 8 + 5 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 22155849 + 42263001 = 4707^2 + 6501^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 882414 + ... + 882486.

Almost surely, 2^64418850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64418850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91792116).

64418850 is an abundant number, since it is smaller than the sum of its proper divisors (119165382).

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

64418850 is a wasteful number, since it uses less digits than its factorization.

64418850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 64418850 is about 8026.1354336941. The cubic root of 64418850 is about 400.8707074627.

The spelling of 64418850 in words is "sixty-four million, four hundred eighteen thousand, eight hundred fifty".