64812485 has 4 divisors (see below), whose sum is σ = 77774988. Its totient is φ = 51849984.

The previous prime is 64812463. The next prime is 64812511. The reversal of 64812485 is 58421846.

It is a happy number.

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 29398084 + 35414401 = 5422^2 + 5951^2 .

It is a cyclic number.

It is not a de Polignac number, because 64812485 - 2¹² = 64808389 is a prime.

It is a Duffinian number.

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, 6481244 + ... + 6481253.

It is an arithmetic number, because the mean of its divisors is an integer number (19443747).

Almost surely, 2^64812485 is an apocalyptic number.

It is an amenable number.

64812485 is a deficient number, since it is larger than the sum of its proper divisors (12962503).

64812485 is a wasteful number, since it uses less digits than its factorization.

64812485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12962502.

The product of its digits is 61440, while the sum is 38.

The square root of 64812485 is about 8050.6201624471. The cubic root of 64812485 is about 401.6855642890.

The spelling of 64812485 in words is "sixty-four million, eight hundred twelve thousand, four hundred eighty-five".