3640463 has 8 divisors (see below), whose sum is σ = 3846528. Its totient is φ = 3438424.

The previous prime is 3640451. The next prime is 3640471.

3640463 is nontrivially palindromic in base 10.

It is a Cunningham number, because it is equal to 1908²-1.

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

It is a cyclic number.

It is not a de Polignac number, because 3640463 - 2⁴ = 3640447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956 + ... + 2862.

It is an arithmetic number, because the mean of its divisors is an integer number (480816).

Almost surely, 2^3640463 is an apocalyptic number.

3640463 is a deficient number, since it is larger than the sum of its proper divisors (206065).

3640463 is a wasteful number, since it uses less digits than its factorization.

3640463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 3640463 is about 1907.9997379455. Note that the first 3 decimals coincide. The cubic root of 3640463 is about 153.8339555136.

The spelling of 3640463 in words is "three million, six hundred forty thousand, four hundred sixty-three".