8601620945 has 16 divisors (see below), whose sum is σ = 10367170560. Its totient is φ = 6851216064.

The previous prime is 8601620903. The next prime is 8601620947. The reversal of 8601620945 is 5490261068.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8601620945 - 2¹⁰ = 8601619921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8601620947) 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, 1105007 + ... + 1112763.

It is an arithmetic number, because the mean of its divisors is an integer number (647948160).

Almost surely, 2^8601620945 is an apocalyptic number.

It is an amenable number.

8601620945 is a deficient number, since it is larger than the sum of its proper divisors (1765549615).

8601620945 is a wasteful number, since it uses less digits than its factorization.

8601620945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8704.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 8601620945 is about 92744.9240929120. The cubic root of 8601620945 is about 2048.9283270324.

The spelling of 8601620945 in words is "eight billion, six hundred one million, six hundred twenty thousand, nine hundred forty-five".