64999350 has 144 divisors (see below), whose sum is σ = 193362624. Its totient is φ = 15552000.

The previous prime is 64999327. The next prime is 64999351. The reversal of 64999350 is 5399946.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 64999296 and 64999305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64999351) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 239715 + ... + 239985.

It is an arithmetic number, because the mean of its divisors is an integer number (1342796).

Almost surely, 2^64999350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64999350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96681312).

64999350 is an abundant number, since it is smaller than the sum of its proper divisors (128363274).

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

64999350 is a wasteful number, since it uses less digits than its factorization.

64999350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 64999350 is about 8062.2174369090. The cubic root of 64999350 is about 402.0712356125.

It can be divided in two parts, 649 and 99350, that added together give a palindrome (99999).

The spelling of 64999350 in words is "sixty-four million, nine hundred ninety-nine thousand, three hundred fifty".