64388346 has 16 divisors (see below), whose sum is σ = 140483808. Its totient is φ = 19511600.

The previous prime is 64388341. The next prime is 64388347.

64388346 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64388298 and 64388307.

It is not an unprimeable number, because it can be changed into a prime (64388341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487725 + ... + 487856.

It is an arithmetic number, because the mean of its divisors is an integer number (8780238).

Almost surely, 2^64388346 is an apocalyptic number.

64388346 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64388346 is an abundant number, since it is smaller than the sum of its proper divisors (76095462).

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

64388346 is a wasteful number, since it uses less digits than its factorization.

64388346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975597.

The product of its digits is 331776, while the sum is 42.

The square root of 64388346 is about 8024.2349168005. The cubic root of 64388346 is about 400.8074232393.

The spelling of 64388346 in words is "sixty-four million, three hundred eighty-eight thousand, three hundred forty-six".