64093481 has 2 divisors, whose sum is σ = 64093482. Its totient is φ = 64093480.

The previous prime is 64093459. The next prime is 64093499. The reversal of 64093481 is 18439046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64080025 + 13456 = 8005^2 + 116^2 .

It is a cyclic number.

It is not a de Polignac number, because 64093481 - 2¹⁸ = 63831337 is a prime.

It is a super-2 number, since 2×64093481² = 8215948613394722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64099481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32046740 + 32046741.

It is an arithmetic number, because the mean of its divisors is an integer number (32046741).

Almost surely, 2^64093481 is an apocalyptic number.

It is an amenable number.

64093481 is a deficient number, since it is larger than the sum of its proper divisors (1).

64093481 is an equidigital number, since it uses as much as digits as its factorization.

64093481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 64093481 is about 8005.8404305857. The cubic root of 64093481 is about 400.1946573393.

The spelling of 64093481 in words is "sixty-four million, ninety-three thousand, four hundred eighty-one".