64386061 has 4 divisors (see below), whose sum is σ = 66606300. Its totient is φ = 62165824.

The previous prime is 64386013. The next prime is 64386067. The reversal of 64386061 is 16068346.

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 45981961 + 18404100 = 6781^2 + 4290^2 .

It is a cyclic number.

It is not a de Polignac number, because 64386061 - 2⁹ = 64385549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64386067) 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, 1110076 + ... + 1110133.

It is an arithmetic number, because the mean of its divisors is an integer number (16651575).

Almost surely, 2^64386061 is an apocalyptic number.

It is an amenable number.

64386061 is a deficient number, since it is larger than the sum of its proper divisors (2220239).

64386061 is a wasteful number, since it uses less digits than its factorization.

64386061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220238.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 64386061 is about 8024.0925343618. The cubic root of 64386061 is about 400.8026819269.

The spelling of 64386061 in words is "sixty-four million, three hundred eighty-six thousand, sixty-one".