3678947 has 4 divisors (see below), whose sum is σ = 3778416. Its totient is φ = 3579480.

The previous prime is 3678943. The next prime is 3678949. The reversal of 3678947 is 7498763.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3678947 - 2² = 3678943 is a prime.

It is an Ulam number.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3678898 and 3678907.

It is not an unprimeable number, because it can be changed into a prime (3678943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49679 + ... + 49752.

It is an arithmetic number, because the mean of its divisors is an integer number (944604).

Almost surely, 2^3678947 is an apocalyptic number.

3678947 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

3678947 is a deficient number, since it is larger than the sum of its proper divisors (99469).

3678947 is an equidigital number, since it uses as much as digits as its factorization.

3678947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99468.

The product of its digits is 254016, while the sum is 44.

The square root of 3678947 is about 1918.0581325914. The cubic root of 3678947 is about 154.3741255066.

The spelling of 3678947 in words is "three million, six hundred seventy-eight thousand, nine hundred forty-seven".