64407265 has 8 divisors (see below), whose sum is σ = 83234088. Its totient is φ = 47562240.

The previous prime is 64407263. The next prime is 64407281. The reversal of 64407265 is 56270446.

It can be written as a sum of positive squares in 4 ways, for example, as 678976 + 63728289 = 824^2 + 7983^2 .

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

It is not a de Polignac number, because 64407265 - 2¹ = 64407263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64407265.

It is not an unprimeable number, because it can be changed into a prime (64407263) 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, 495376 + ... + 495505.

It is an arithmetic number, because the mean of its divisors is an integer number (10404261).

Almost surely, 2^64407265 is an apocalyptic number.

64407265 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64407265 is a deficient number, since it is larger than the sum of its proper divisors (18826823).

64407265 is a wasteful number, since it uses less digits than its factorization.

64407265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990899.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 64407265 is about 8025.4136965019. The cubic root of 64407265 is about 400.8466753377.

The spelling of 64407265 in words is "sixty-four million, four hundred seven thousand, two hundred sixty-five".