2633947 has 2 divisors, whose sum is σ = 2633948. Its totient is φ = 2633946.

The previous prime is 2633923. The next prime is 2633987. The reversal of 2633947 is 7493362.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2633947 is a prime.

It is an Ulam number.

2633947 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2633987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1316973 + 1316974.

It is an arithmetic number, because the mean of its divisors is an integer number (1316974).

2^2633947 is an apocalyptic number.

2633947 is the 868-th centered heptagonal number.

2633947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2633947 is an equidigital number, since it uses as much as digits as its factorization.

2633947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 34.

The square root of 2633947 is about 1622.9439300235. The cubic root of 2633947 is about 138.1027555068.

The spelling of 2633947 in words is "two million, six hundred thirty-three thousand, nine hundred forty-seven".