64810738 has 4 divisors (see below), whose sum is σ = 97216110. Its totient is φ = 32405368.

The previous prime is 64810723. The next prime is 64810769. The reversal of 64810738 is 83701846.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 52229529 + 12581209 = 7227^2 + 3547^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64810697 and 64810706.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16202683 + ... + 16202686.

Almost surely, 2^64810738 is an apocalyptic number.

64810738 is a deficient number, since it is larger than the sum of its proper divisors (32405372).

64810738 is a wasteful number, since it uses less digits than its factorization.

64810738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32405371.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 64810738 is about 8050.5116607580. The cubic root of 64810738 is about 401.6819551542.

The spelling of 64810738 in words is "sixty-four million, eight hundred ten thousand, seven hundred thirty-eight".