64817396 has 60 divisors (see below), whose sum is σ = 140464548. Its totient is φ = 26078976.

The previous prime is 64817339. The next prime is 64817411. The reversal of 64817396 is 69371846.

It can be written as a sum of positive squares in 2 ways, for example, as 47059600 + 17757796 = 6860^2 + 4214^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 163070 + ... + 163466.

Almost surely, 2^64817396 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 64817396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70232274).

64817396 is an abundant number, since it is smaller than the sum of its proper divisors (75647152).

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

64817396 is a wasteful number, since it uses less digits than its factorization.

64817396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 423 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 64817396 is about 8050.9251642280. The cubic root of 64817396 is about 401.6957095976.

The spelling of 64817396 in words is "sixty-four million, eight hundred seventeen thousand, three hundred ninety-six".