64115738 has 8 divisors (see below), whose sum is σ = 101830932. Its totient is φ = 30172096.

The previous prime is 64115707. The next prime is 64115741. The reversal of 64115738 is 83751146.

It can be written as a sum of positive squares in 2 ways, for example, as 55606849 + 8508889 = 7457^2 + 2917^2 .

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

It is a super-2 number, since 2×64115738² = 8221655718569288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64115698 and 64115707.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 942845 + ... + 942912.

Almost surely, 2^64115738 is an apocalyptic number.

64115738 is a deficient number, since it is larger than the sum of its proper divisors (37715194).

64115738 is a wasteful number, since it uses less digits than its factorization.

64115738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885776.

The product of its digits is 20160, while the sum is 35.

The square root of 64115738 is about 8007.2303576205. The cubic root of 64115738 is about 400.2409756310.

The spelling of 64115738 in words is "sixty-four million, one hundred fifteen thousand, seven hundred thirty-eight".