64723238 has 8 divisors (see below), whose sum is σ = 97149888. Its totient is φ = 32339944.

The previous prime is 64723237. The next prime is 64723261. The reversal of 64723238 is 83232746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 64723198 and 64723207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64723237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6806 + ... + 13257.

It is an arithmetic number, because the mean of its divisors is an integer number (12143736).

Almost surely, 2^64723238 is an apocalyptic number.

64723238 is a deficient number, since it is larger than the sum of its proper divisors (32426650).

64723238 is a wasteful number, since it uses less digits than its factorization.

64723238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21678.

The product of its digits is 48384, while the sum is 35.

The square root of 64723238 is about 8045.0753880868. The cubic root of 64723238 is about 401.5011054923.

The spelling of 64723238 in words is "sixty-four million, seven hundred twenty-three thousand, two hundred thirty-eight".