64823700 has 72 divisors (see below), whose sum is σ = 194050080. Its totient is φ = 16688000.

The previous prime is 64823699. The next prime is 64823743. The reversal of 64823700 is 732846.

64823700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64823700² = 8404224163380000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4975 + ... + 12425.

It is an arithmetic number, because the mean of its divisors is an integer number (2695140).

Almost surely, 2^64823700 is an apocalyptic number.

64823700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64823700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97025040).

64823700 is an abundant number, since it is smaller than the sum of its proper divisors (129226380).

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

64823700 is a wasteful number, since it uses less digits than its factorization.

64823700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7497 (or 7490 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 64823700 is about 8051.3166625093. The cubic root of 64823700 is about 401.7087318613.

The spelling of 64823700 in words is "sixty-four million, eight hundred twenty-three thousand, seven hundred".