64601245 has 4 divisors (see below), whose sum is σ = 77521500. Its totient is φ = 51680992.

The previous prime is 64601219. The next prime is 64601263. The reversal of 64601245 is 54210646.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15194404 + 49406841 = 3898^2 + 7029^2 .

It is a cyclic number.

It is not a de Polignac number, because 64601245 - 2⁹ = 64600733 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 6460120 + ... + 6460129.

It is an arithmetic number, because the mean of its divisors is an integer number (19380375).

Almost surely, 2^64601245 is an apocalyptic number.

It is an amenable number.

64601245 is a deficient number, since it is larger than the sum of its proper divisors (12920255).

64601245 is a wasteful number, since it uses less digits than its factorization.

64601245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12920254.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 64601245 is about 8037.4899688895. The cubic root of 64601245 is about 401.2486916169.

It can be divided in two parts, 64601 and 245, that added together give a palindrome (64846).

The spelling of 64601245 in words is "sixty-four million, six hundred one thousand, two hundred forty-five".