64534950 has 72 divisors (see below), whose sum is σ = 176301216. Its totient is φ = 16920000.

The previous prime is 64534949. The next prime is 64534957. The reversal of 64534950 is 5943546.

It is a happy number.

64534950 is a `hidden beast` number, since 645 + 3 + 4 + 9 + 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (64534957) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26275 + ... + 28625.

It is an arithmetic number, because the mean of its divisors is an integer number (2448628).

Almost surely, 2^64534950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64534950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88150608).

64534950 is an abundant number, since it is smaller than the sum of its proper divisors (111766266).

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

64534950 is a wasteful number, since it uses less digits than its factorization.

64534950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430 (or 2422 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 64534950 is about 8033.3647993851. The cubic root of 64534950 is about 401.1113883466. Note that the first 3 decimals are identical.

The spelling of 64534950 in words is "sixty-four million, five hundred thirty-four thousand, nine hundred fifty".