65506915 has 8 divisors (see below), whose sum is σ = 79685568. Its totient is φ = 51687360.

The previous prime is 65506901. The next prime is 65506939. The reversal of 65506915 is 51960556.

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

It is not a de Polignac number, because 65506915 - 2⁷ = 65506787 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

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, 89371 + ... + 90100.

It is an arithmetic number, because the mean of its divisors is an integer number (9960696).

Almost surely, 2^65506915 is an apocalyptic number.

65506915 is a deficient number, since it is larger than the sum of its proper divisors (14178653).

65506915 is a wasteful number, since it uses less digits than its factorization.

65506915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179549.

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 65506915 is about 8093.6342269712. The cubic root of 65506915 is about 403.1150839057.

The spelling of 65506915 in words is "sixty-five million, five hundred six thousand, nine hundred fifteen".