8261667 has 12 divisors (see below), whose sum is σ = 11971440. Its totient is φ = 5490288.

The previous prime is 8261653. The next prime is 8261689. The reversal of 8261667 is 7661628.

It is a happy number.

It is not a de Polignac number, because 8261667 - 2⁴ = 8261651 is a prime.

8261667 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8261647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1953 + ... + 4509.

It is an arithmetic number, because the mean of its divisors is an integer number (997620).

Almost surely, 2^8261667 is an apocalyptic number.

8261667 is a deficient number, since it is larger than the sum of its proper divisors (3709773).

8261667 is a wasteful number, since it uses less digits than its factorization.

8261667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922 (or 2919 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 8261667 is about 2874.3115697502. The cubic root of 8261667 is about 202.1572069684.

The spelling of 8261667 in words is "eight million, two hundred sixty-one thousand, six hundred sixty-seven".