64774133 has 2 divisors, whose sum is σ = 64774134. Its totient is φ = 64774132.

The previous prime is 64774121. The next prime is 64774169. The reversal of 64774133 is 33147746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64288324 + 485809 = 8018^2 + 697^2 .

It is a cyclic number.

It is not a de Polignac number, because 64774133 - 2⁶ = 64774069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64774093 and 64774102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64774103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32387066 + 32387067.

It is an arithmetic number, because the mean of its divisors is an integer number (32387067).

Almost surely, 2^64774133 is an apocalyptic number.

It is an amenable number.

64774133 is a deficient number, since it is larger than the sum of its proper divisors (1).

64774133 is an equidigital number, since it uses as much as digits as its factorization.

64774133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 35.

The square root of 64774133 is about 8048.2378816732. The cubic root of 64774133 is about 401.6063178063.

The spelling of 64774133 in words is "sixty-four million, seven hundred seventy-four thousand, one hundred thirty-three".