8961515 has 8 divisors (see below), whose sum is σ = 10858848. Its totient is φ = 7099200.

The previous prime is 8961509. The next prime is 8961527. The reversal of 8961515 is 5151698.

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

It is a de Polignac number, because none of the positive numbers 2^k-8961515 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, 8186 + ... + 9215.

It is an arithmetic number, because the mean of its divisors is an integer number (1357356).

Almost surely, 2^8961515 is an apocalyptic number.

8961515 is a deficient number, since it is larger than the sum of its proper divisors (1897333).

8961515 is a wasteful number, since it uses less digits than its factorization.

8961515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17509.

The product of its digits is 10800, while the sum is 35.

The square root of 8961515 is about 2993.5789617112. The cubic root of 8961515 is about 207.7114697068.

The spelling of 8961515 in words is "eight million, nine hundred sixty-one thousand, five hundred fifteen".