64426057 has 2 divisors, whose sum is σ = 64426058. Its totient is φ = 64426056.

The previous prime is 64426027. The next prime is 64426079. The reversal of 64426057 is 75062446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56010256 + 8415801 = 7484^2 + 2901^2 .

It is a cyclic number.

It is not a de Polignac number, because 64426057 - 2⁷ = 64425929 is a prime.

It is not a weakly prime, because it can be changed into another prime (64426007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32213028 + 32213029.

It is an arithmetic number, because the mean of its divisors is an integer number (32213029).

Almost surely, 2^64426057 is an apocalyptic number.

It is an amenable number.

64426057 is a deficient number, since it is larger than the sum of its proper divisors (1).

64426057 is an equidigital number, since it uses as much as digits as its factorization.

64426057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 64426057 is about 8026.5843918818. The cubic root of 64426057 is about 400.8856563349.

The spelling of 64426057 in words is "sixty-four million, four hundred twenty-six thousand, fifty-seven".