64115393 has 2 divisors, whose sum is σ = 64115394. Its totient is φ = 64115392.

The previous prime is 64115383. The next prime is 64115407. The reversal of 64115393 is 39351146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63091249 + 1024144 = 7943^2 + 1012^2 .

It is a cyclic number.

It is not a de Polignac number, because 64115393 - 2⁴ = 64115377 is a prime.

It is a super-2 number, since 2×64115393² = 8221567239088898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64115383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32057696 + 32057697.

It is an arithmetic number, because the mean of its divisors is an integer number (32057697).

Almost surely, 2^64115393 is an apocalyptic number.

It is an amenable number.

64115393 is a deficient number, since it is larger than the sum of its proper divisors (1).

64115393 is an equidigital number, since it uses as much as digits as its factorization.

64115393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 32.

The square root of 64115393 is about 8007.2088145620. The cubic root of 64115393 is about 400.2402577450.

The spelling of 64115393 in words is "sixty-four million, one hundred fifteen thousand, three hundred ninety-three".