64860365 has 4 divisors (see below), whose sum is σ = 77832444. Its totient is φ = 51888288.

The previous prime is 64860361. The next prime is 64860373. The reversal of 64860365 is 56306846.

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 8219689 + 56640676 = 2867^2 + 7526^2 .

It is a cyclic number.

It is not a de Polignac number, because 64860365 - 2² = 64860361 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 (64860361) 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, 6486032 + ... + 6486041.

It is an arithmetic number, because the mean of its divisors is an integer number (19458111).

Almost surely, 2^64860365 is an apocalyptic number.

It is an amenable number.

64860365 is a deficient number, since it is larger than the sum of its proper divisors (12972079).

64860365 is a wasteful number, since it uses less digits than its factorization.

64860365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12972078.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 64860365 is about 8053.5932974046. The cubic root of 64860365 is about 401.7844545503.

The spelling of 64860365 in words is "sixty-four million, eight hundred sixty thousand, three hundred sixty-five".