3643730 has 8 divisors (see below), whose sum is σ = 6558732. Its totient is φ = 1457488.

The previous prime is 3643721. The next prime is 3643733. The reversal of 3643730 is 373463.

It can be written as a sum of positive squares in 2 ways, for example, as 3613801 + 29929 = 1901^2 + 173^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 3643730.

It is not an unprimeable number, because it can be changed into a prime (3643733) 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, 182177 + ... + 182196.

Almost surely, 2^3643730 is an apocalyptic number.

3643730 is a deficient number, since it is larger than the sum of its proper divisors (2915002).

3643730 is a wasteful number, since it uses less digits than its factorization.

3643730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364380.

The product of its (nonzero) digits is 4536, while the sum is 26.

The square root of 3643730 is about 1908.8556781486. The cubic root of 3643730 is about 153.8799593020.

The spelling of 3643730 in words is "three million, six hundred forty-three thousand, seven hundred thirty".