9642679 has 2 divisors, whose sum is σ = 9642680. Its totient is φ = 9642678.

The previous prime is 9642653. The next prime is 9642683. The reversal of 9642679 is 9762469.

9642679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9642679 - 2¹⁵ = 9609911 is a prime.

9642679 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9643679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4821339 + 4821340.

It is an arithmetic number, because the mean of its divisors is an integer number (4821340).

Almost surely, 2^9642679 is an apocalyptic number.

9642679 is a deficient number, since it is larger than the sum of its proper divisors (1).

9642679 is an equidigital number, since it uses as much as digits as its factorization.

9642679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 9642679 is about 3105.2663331830. The cubic root of 9642679 is about 212.8462010673.

Subtracting from 9642679 its sum of digits (43), we obtain a triangular number (9642636 = T₄₃₉₁).

The spelling of 9642679 in words is "nine million, six hundred forty-two thousand, six hundred seventy-nine".