3640827 has 8 divisors (see below), whose sum is σ = 4889920. Its totient is φ = 2409480.

The previous prime is 3640823. The next prime is 3640829. The reversal of 3640827 is 7280463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3640827 - 2² = 3640823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3640794 and 3640803.

It is not an unprimeable number, because it can be changed into a prime (3640823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3949 + ... + 4782.

It is an arithmetic number, because the mean of its divisors is an integer number (611240).

Almost surely, 2^3640827 is an apocalyptic number.

3640827 is a deficient number, since it is larger than the sum of its proper divisors (1249093).

3640827 is a wasteful number, since it uses less digits than its factorization.

3640827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8873.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 3640827 is about 1908.0951234150. The cubic root of 3640827 is about 153.8390824891.

The spelling of 3640827 in words is "three million, six hundred forty thousand, eight hundred twenty-seven".