64150865 has 4 divisors (see below), whose sum is σ = 76981044. Its totient is φ = 51320688.

The previous prime is 64150861. The next prime is 64150901. The reversal of 64150865 is 56805146.

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 21939856 + 42211009 = 4684^2 + 6497^2 .

It is a cyclic number.

It is not a de Polignac number, because 64150865 - 2² = 64150861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64150861) 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, 6415082 + ... + 6415091.

It is an arithmetic number, because the mean of its divisors is an integer number (19245261).

Almost surely, 2^64150865 is an apocalyptic number.

It is an amenable number.

64150865 is a deficient number, since it is larger than the sum of its proper divisors (12830179).

64150865 is a wasteful number, since it uses less digits than its factorization.

64150865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12830178.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 64150865 is about 8009.4235123385. The cubic root of 64150865 is about 400.3140554417.

The spelling of 64150865 in words is "sixty-four million, one hundred fifty thousand, eight hundred sixty-five".