7681667 has 4 divisors (see below), whose sum is σ = 8779056. Its totient is φ = 6584280.

The previous prime is 7681657. The next prime is 7681691. The reversal of 7681667 is 7661867.

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

It is a cyclic number.

It is not a de Polignac number, because 7681667 - 2⁴ = 7681651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7681657) 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, 548684 + ... + 548697.

It is an arithmetic number, because the mean of its divisors is an integer number (2194764).

Almost surely, 2^7681667 is an apocalyptic number.

7681667 is a deficient number, since it is larger than the sum of its proper divisors (1097389).

7681667 is a wasteful number, since it uses less digits than its factorization.

7681667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097388.

The product of its digits is 84672, while the sum is 41.

The square root of 7681667 is about 2771.5820391971. The cubic root of 7681667 is about 197.3112398288.

The spelling of 7681667 in words is "seven million, six hundred eighty-one thousand, six hundred sixty-seven".