64377265 has 8 divisors (see below), whose sum is σ = 78519528. Its totient is φ = 50657280.

The previous prime is 64377241. The next prime is 64377277. The reversal of 64377265 is 56277346.

It can be written as a sum of positive squares in 4 ways, for example, as 104976 + 64272289 = 324^2 + 8017^2 .

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

It is not a de Polignac number, because 64377265 - 2¹¹ = 64375217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105232 + ... + 105841.

It is an arithmetic number, because the mean of its divisors is an integer number (9814941).

Almost surely, 2^64377265 is an apocalyptic number.

It is an amenable number.

64377265 is a deficient number, since it is larger than the sum of its proper divisors (14142263).

64377265 is a wasteful number, since it uses less digits than its factorization.

64377265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211139.

The product of its digits is 211680, while the sum is 40.

The square root of 64377265 is about 8023.5444162789. The cubic root of 64377265 is about 400.7844294206.

The spelling of 64377265 in words is "sixty-four million, three hundred seventy-seven thousand, two hundred sixty-five".