3640862 has 4 divisors (see below), whose sum is σ = 5461296. Its totient is φ = 1820430.

The previous prime is 3640859. The next prime is 3640867. The reversal of 3640862 is 2680463.

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

It is a super-2 number, since 2×3640862² = 26511752206088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640867) 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 as a sum of consecutive naturals, namely, 910214 + ... + 910217.

It is an arithmetic number, because the mean of its divisors is an integer number (1365324).

Almost surely, 2^3640862 is an apocalyptic number.

3640862 is a deficient number, since it is larger than the sum of its proper divisors (1820434).

3640862 is a wasteful number, since it uses less digits than its factorization.

3640862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820433.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 3640862 is about 1908.1042948434. The cubic root of 3640862 is about 153.8395754495.

The spelling of 3640862 in words is "three million, six hundred forty thousand, eight hundred sixty-two".