7642871 has 2 divisors, whose sum is σ = 7642872. Its totient is φ = 7642870.

The previous prime is 7642867. The next prime is 7642913. The reversal of 7642871 is 1782467.

It is a happy number.

7642871 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7642871 - 2² = 7642867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7642861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3821435 + 3821436.

It is an arithmetic number, because the mean of its divisors is an integer number (3821436).

Almost surely, 2^7642871 is an apocalyptic number.

7642871 is a deficient number, since it is larger than the sum of its proper divisors (1).

7642871 is an equidigital number, since it uses as much as digits as its factorization.

7642871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 35.

The square root of 7642871 is about 2764.5742891085. The cubic root of 7642871 is about 196.9785077947.

The spelling of 7642871 in words is "seven million, six hundred forty-two thousand, eight hundred seventy-one".