2945647 has 2 divisors, whose sum is σ = 2945648. Its totient is φ = 2945646.

The previous prime is 2945639. The next prime is 2945659. The reversal of 2945647 is 7465492.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2945647 - 2³ = 2945639 is a prime.

It is a d-powerful number, because it can be written as 2 + 9⁶ + 4⁹ + 5 + 6⁷ + 4¹⁰ + 7⁷ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2945147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1472823 + 1472824.

It is an arithmetic number, because the mean of its divisors is an integer number (1472824).

2^2945647 is an apocalyptic number.

2945647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2945647 is an equidigital number, since it uses as much as digits as its factorization.

2945647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 2945647 is about 1716.2887286235. The cubic root of 2945647 is about 143.3486366690.

The spelling of 2945647 in words is "two million, nine hundred forty-five thousand, six hundred forty-seven".