65009915 has 8 divisors (see below), whose sum is σ = 78109920. Its totient is φ = 51942592.

The previous prime is 65009897. The next prime is 65009933. The reversal of 65009915 is 51990056.

It is an interprime number because it is at equal distance from previous prime (65009897) and next prime (65009933).

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

It is a cyclic number.

It is not a de Polignac number, because 65009915 - 2¹⁶ = 64944379 is a prime.

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, 3554 + ... + 11943.

It is an arithmetic number, because the mean of its divisors is an integer number (9763740).

Almost surely, 2^65009915 is an apocalyptic number.

65009915 is a deficient number, since it is larger than the sum of its proper divisors (13100005).

65009915 is a wasteful number, since it uses less digits than its factorization.

65009915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16341.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 65009915 is about 8062.8726270480. The cubic root of 65009915 is about 402.0930186636.

The spelling of 65009915 in words is "sixty-five million, nine thousand, nine hundred fifteen".