8618961 has 16 divisors (see below), whose sum is σ = 12776960. Its totient is φ = 5132160.

The previous prime is 8618959. The next prime is 8618999. The reversal of 8618961 is 1698168.

It is not a de Polignac number, because 8618961 - 2¹ = 8618959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (8618861) 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, 2356 + ... + 4773.

It is an arithmetic number, because the mean of its divisors is an integer number (798560).

Almost surely, 2^8618961 is an apocalyptic number.

It is an amenable number.

8618961 is a deficient number, since it is larger than the sum of its proper divisors (4157999).

8618961 is a wasteful number, since it uses less digits than its factorization.

8618961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7176.

The product of its digits is 20736, while the sum is 39.

The square root of 8618961 is about 2935.8067034463. The cubic root of 8618961 is about 205.0304218187.

The spelling of 8618961 in words is "eight million, six hundred eighteen thousand, nine hundred sixty-one".