64602061 has 2 divisors, whose sum is σ = 64602062. Its totient is φ = 64602060.

The previous prime is 64602059. The next prime is 64602067. The reversal of 64602061 is 16020646.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34692100 + 29909961 = 5890^2 + 5469^2 .

It is a cyclic number.

It is not a de Polignac number, because 64602061 - 2¹ = 64602059 is a prime.

Together with 64602059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64602067) 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, 32301030 + 32301031.

It is an arithmetic number, because the mean of its divisors is an integer number (32301031).

Almost surely, 2^64602061 is an apocalyptic number.

It is an amenable number.

64602061 is a deficient number, since it is larger than the sum of its proper divisors (1).

64602061 is an equidigital number, since it uses as much as digits as its factorization.

64602061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 64602061 is about 8037.5407308455. The cubic root of 64602061 is about 401.2503810454.

The spelling of 64602061 in words is "sixty-four million, six hundred two thousand, sixty-one".