8637961 has 4 divisors (see below), whose sum is σ = 8649424. Its totient is φ = 8626500.

The previous prime is 8637953. The next prime is 8637973. The reversal of 8637961 is 1697368.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8637961 - 2³ = 8637953 is a prime.

It is a super-2 number, since 2×8637961² = 149228740475042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8637991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4515 + ... + 6136.

It is an arithmetic number, because the mean of its divisors is an integer number (2162356).

Almost surely, 2^8637961 is an apocalyptic number.

It is an amenable number.

8637961 is a deficient number, since it is larger than the sum of its proper divisors (11463).

8637961 is a wasteful number, since it uses less digits than its factorization.

8637961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11462.

The product of its digits is 54432, while the sum is 40.

The square root of 8637961 is about 2939.0408299307. The cubic root of 8637961 is about 205.1809704750.

The spelling of 8637961 in words is "eight million, six hundred thirty-seven thousand, nine hundred sixty-one".