64196784 has 120 divisors (see below), whose sum is σ = 188952192. Its totient is φ = 20321280.

The previous prime is 64196771. The next prime is 64196837. The reversal of 64196784 is 48769146.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 325774 + ... + 325970.

Almost surely, 2^64196784 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 64196784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94476096).

64196784 is an abundant number, since it is smaller than the sum of its proper divisors (124755408).

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

64196784 is a wasteful number, since it uses less digits than its factorization.

64196784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 306 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 64196784 is about 8012.2895604190. The cubic root of 64196784 is about 400.4095472013.

It can be divided in two parts, 64196 and 784, that added together give a triangular number (64980 = T₃₆₀).

The spelling of 64196784 in words is "sixty-four million, one hundred ninety-six thousand, seven hundred eighty-four".