3642679 has 2 divisors, whose sum is σ = 3642680. Its totient is φ = 3642678.

The previous prime is 3642677. The next prime is 3642697. The reversal of 3642679 is 9762463.

Together with next prime (3642697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3642679 - 2¹ = 3642677 is a prime.

It is a super-2 number, since 2×3642679² = 26538220594082, which contains 22 as substring.

Together with 3642677, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3642673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1821339 + 1821340.

It is an arithmetic number, because the mean of its divisors is an integer number (1821340).

Almost surely, 2^3642679 is an apocalyptic number.

3642679 is a deficient number, since it is larger than the sum of its proper divisors (1).

3642679 is an equidigital number, since it uses as much as digits as its factorization.

3642679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 37.

The square root of 3642679 is about 1908.5803624684. The cubic root of 3642679 is about 153.8651627986.

The spelling of 3642679 in words is "three million, six hundred forty-two thousand, six hundred seventy-nine".