8260661 has 4 divisors (see below), whose sum is σ = 8293824. Its totient is φ = 8227500.

The previous prime is 8260643. The next prime is 8260667. The reversal of 8260661 is 1660628.

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 8260661 - 2¹⁴ = 8244277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8260667) 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, 16205 + ... + 16706.

It is an arithmetic number, because the mean of its divisors is an integer number (2073456).

Almost surely, 2^8260661 is an apocalyptic number.

It is an amenable number.

8260661 is a deficient number, since it is larger than the sum of its proper divisors (33163).

8260661 is a wasteful number, since it uses less digits than its factorization.

8260661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33162.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 8260661 is about 2874.1365659968. The cubic root of 8260661 is about 202.1490012634.

It can be divided in two parts, 8260 and 661, that multiplied together give a triangular number (5459860 = T₃₃₀₄).

The spelling of 8260661 in words is "eight million, two hundred sixty thousand, six hundred sixty-one".