64894206 has 32 divisors (see below), whose sum is σ = 140894208. Its totient is φ = 19807200.

The previous prime is 64894187. The next prime is 64894229. The reversal of 64894206 is 60249846.

It is a super-2 number, since 2×64894206² = 8422515944740872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6631 + ... + 13181.

It is an arithmetic number, because the mean of its divisors is an integer number (4402944).

Almost surely, 2^64894206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64894206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70447104).

64894206 is an abundant number, since it is smaller than the sum of its proper divisors (76000002).

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

64894206 is a wasteful number, since it uses less digits than its factorization.

64894206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6696.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 64894206 is about 8055.6940110707. The cubic root of 64894206 is about 401.8543196299.

The spelling of 64894206 in words is "sixty-four million, eight hundred ninety-four thousand, two hundred six".