64399104 has 288 divisors, whose sum is σ = 239393280. Its totient is φ = 16727040.

The previous prime is 64399087. The next prime is 64399147. The reversal of 64399104 is 40199346.

64399104 is a `hidden beast` number, since 643 + 9 + 9 + 1 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5854459 + ... + 5854469.

Almost surely, 2^64399104 is an apocalyptic number.

64399104 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64399104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119696640).

64399104 is an abundant number, since it is smaller than the sum of its proper divisors (174994176).

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

64399104 is an equidigital number, since it uses as much as digits as its factorization.

64399104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65 (or 23 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 64399104 is about 8024.9052330853. The cubic root of 64399104 is about 400.8297442876.

The spelling of 64399104 in words is "sixty-four million, three hundred ninety-nine thousand, one hundred four".