8961505 has 16 divisors (see below), whose sum is σ = 12524544. Its totient is φ = 6027840.

The previous prime is 8961497. The next prime is 8961509. The reversal of 8961505 is 5051698.

8961505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8961505 - 2³ = 8961497 is a prime.

It is a Duffinian number.

8961505 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8961509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 561 + ... + 4270.

It is an arithmetic number, because the mean of its divisors is an integer number (782784).

Almost surely, 2^8961505 is an apocalyptic number.

It is an amenable number.

8961505 is a deficient number, since it is larger than the sum of its proper divisors (3563039).

8961505 is a wasteful number, since it uses less digits than its factorization.

8961505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4896.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 8961505 is about 2993.5772914692. The cubic root of 8961505 is about 207.7113924462.

It can be divided in two parts, 896 and 1505, that added together give a 4-th power (2401 = 7⁴).

The spelling of 8961505 in words is "eight million, nine hundred sixty-one thousand, five hundred five".