64818061 has 8 divisors (see below), whose sum is σ = 80812224. Its totient is φ = 50507520.

The previous prime is 64818031. The next prime is 64818067. The reversal of 64818061 is 16081846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64818061 - 2¹¹ = 64816013 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 (64818067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420820 + ... + 420973.

It is an arithmetic number, because the mean of its divisors is an integer number (10101528).

Almost surely, 2^64818061 is an apocalyptic number.

It is an amenable number.

64818061 is a deficient number, since it is larger than the sum of its proper divisors (15994163).

64818061 is a wasteful number, since it uses less digits than its factorization.

64818061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841811.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 64818061 is about 8050.9664637235. The cubic root of 64818061 is about 401.6970833375.

The spelling of 64818061 in words is "sixty-four million, eight hundred eighteen thousand, sixty-one".