64194312 has 288 divisors, whose sum is σ = 225309600. Its totient is φ = 15095808.

The previous prime is 64194307. The next prime is 64194349. The reversal of 64194312 is 21349146.

It is a self number, because there is not a number n which added to its sum of digits gives 64194312.

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, 3378639 + ... + 3378657.

It is an arithmetic number, because the mean of its divisors is an integer number (782325).

Almost surely, 2^64194312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64194312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112654800).

64194312 is an abundant number, since it is smaller than the sum of its proper divisors (161115288).

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

64194312 is a wasteful number, since it uses less digits than its factorization.

64194312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 61 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 64194312 is about 8012.1352959121. The cubic root of 64194312 is about 400.4044076650.

It can be divided in two parts, 6419 and 4312, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 64194312 in words is "sixty-four million, one hundred ninety-four thousand, three hundred twelve".