64493300 has 18 divisors (see below), whose sum is σ = 139950678. Its totient is φ = 25797280.

The previous prime is 64493279. The next prime is 64493323. The reversal of 64493300 is 339446.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 7279204 + 57214096 = 2698^2 + 7564^2 .

It is a super-4 number, since 4×64493300⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 322367 + ... + 322566.

Almost surely, 2^64493300 is an apocalyptic number.

It is an amenable number.

64493300 is an abundant number, since it is smaller than the sum of its proper divisors (75457378).

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

64493300 is a wasteful number, since it uses less digits than its factorization.

64493300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644947 (or 644940 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 64493300 is about 8030.7720674914. The cubic root of 64493300 is about 401.0250791213.

The spelling of 64493300 in words is "sixty-four million, four hundred ninety-three thousand, three hundred".