64612073 has 2 divisors, whose sum is σ = 64612074. Its totient is φ = 64612072.

The previous prime is 64612069. The next prime is 64612099. The reversal of 64612073 is 37021646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44782864 + 19829209 = 6692^2 + 4453^2 .

It is a cyclic number.

It is not a de Polignac number, because 64612073 - 2² = 64612069 is a prime.

It is not a weakly prime, because it can be changed into another prime (64612043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32306036 + 32306037.

It is an arithmetic number, because the mean of its divisors is an integer number (32306037).

Almost surely, 2^64612073 is an apocalyptic number.

It is an amenable number.

64612073 is a deficient number, since it is larger than the sum of its proper divisors (1).

64612073 is an equidigital number, since it uses as much as digits as its factorization.

64612073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 64612073 is about 8038.1635340418. The cubic root of 64612073 is about 401.2711085126.

The spelling of 64612073 in words is "sixty-four million, six hundred twelve thousand, seventy-three".