64723000 has 64 divisors (see below), whose sum is σ = 154159200. Its totient is φ = 25427200.

The previous prime is 64722997. The next prime is 64723007. The reversal of 64723000 is 32746.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64723007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58452 + ... + 59548.

Almost surely, 2^64723000 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 64723000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77079600).

64723000 is an abundant number, since it is smaller than the sum of its proper divisors (89436200).

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

64723000 is a wasteful number, since it uses less digits than its factorization.

64723000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 64723000 is about 8045.0605964157. The cubic root of 64723000 is about 401.5006133590.

Adding to 64723000 its reverse (32746), we get a palindrome (64755746).

The spelling of 64723000 in words is "sixty-four million, seven hundred twenty-three thousand".