8613977 has 4 divisors (see below), whose sum is σ = 8824116. Its totient is φ = 8403840.

The previous prime is 8613967. The next prime is 8614003. The reversal of 8613977 is 7793168.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2343961 + 6270016 = 1531^2 + 2504^2 .

It is a cyclic number.

It is not a de Polignac number, because 8613977 - 2⁴ = 8613961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 210097 = 8613977 / (8 + 6 + 1 + 3 + 9 + 7 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8613947) 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, 105008 + ... + 105089.

It is an arithmetic number, because the mean of its divisors is an integer number (2206029).

Almost surely, 2^8613977 is an apocalyptic number.

It is an amenable number.

8613977 is a deficient number, since it is larger than the sum of its proper divisors (210139).

8613977 is a wasteful number, since it uses less digits than its factorization.

8613977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210138.

The product of its digits is 63504, while the sum is 41.

The square root of 8613977 is about 2934.9577509736. The cubic root of 8613977 is about 204.9908939045.

The spelling of 8613977 in words is "eight million, six hundred thirteen thousand, nine hundred seventy-seven".