3654947 has 2 divisors, whose sum is σ = 3654948. Its totient is φ = 3654946.

The previous prime is 3654929. The next prime is 3654961. The reversal of 3654947 is 7494563.

It is a strong prime.

It is an emirp because it is prime and its reverse (7494563) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3654947 - 2⁶ = 3654883 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 3654947.

It is not a weakly prime, because it can be changed into another prime (3654997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1827473 + 1827474.

It is an arithmetic number, because the mean of its divisors is an integer number (1827474).

Almost surely, 2^3654947 is an apocalyptic number.

3654947 is a deficient number, since it is larger than the sum of its proper divisors (1).

3654947 is an equidigital number, since it uses as much as digits as its factorization.

3654947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 3654947 is about 1911.7915681371. The cubic root of 3654947 is about 154.0377008950.

The spelling of 3654947 in words is "three million, six hundred fifty-four thousand, nine hundred forty-seven".