64686341 has 4 divisors (see below), whose sum is σ = 65906892. Its totient is φ = 63465792.

The previous prime is 64686313. The next prime is 64686353. The reversal of 64686341 is 14368646.

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 58461316 + 6225025 = 7646^2 + 2495^2 .

It is a cyclic number.

It is not a de Polignac number, because 64686341 - 2⁶ = 64686277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64686295 and 64686304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64686311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610196 + ... + 610301.

It is an arithmetic number, because the mean of its divisors is an integer number (16476723).

Almost surely, 2^64686341 is an apocalyptic number.

It is an amenable number.

64686341 is a deficient number, since it is larger than the sum of its proper divisors (1220551).

64686341 is a wasteful number, since it uses less digits than its factorization.

64686341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220550.

The product of its digits is 82944, while the sum is 38.

The square root of 64686341 is about 8042.7819192118. The cubic root of 64686341 is about 401.4247959488.

The spelling of 64686341 in words is "sixty-four million, six hundred eighty-six thousand, three hundred forty-one".