64090915 has 8 divisors (see below), whose sum is σ = 87896160. Its totient is φ = 43948032.

The previous prime is 64090891. The next prime is 64090937. The reversal of 64090915 is 51909046.

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 64090915 - 2¹¹ = 64088867 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, 915550 + ... + 915619.

It is an arithmetic number, because the mean of its divisors is an integer number (10987020).

Almost surely, 2^64090915 is an apocalyptic number.

64090915 is a deficient number, since it is larger than the sum of its proper divisors (23805245).

64090915 is a wasteful number, since it uses less digits than its factorization.

64090915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831181.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 64090915 is about 8005.6801709786. The cubic root of 64090915 is about 400.1893166339.

The spelling of 64090915 in words is "sixty-four million, ninety thousand, nine hundred fifteen".