3643742 has 4 divisors (see below), whose sum is σ = 5465616. Its totient is φ = 1821870.

The previous prime is 3643733. The next prime is 3643747. The reversal of 3643742 is 2473463.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910934 + ... + 910937.

It is an arithmetic number, because the mean of its divisors is an integer number (1366404).

Almost surely, 2^3643742 is an apocalyptic number.

3643742 is a deficient number, since it is larger than the sum of its proper divisors (1821874).

3643742 is a wasteful number, since it uses less digits than its factorization.

3643742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821873.

The product of its digits is 12096, while the sum is 29.

The square root of 3643742 is about 1908.8588213904. The cubic root of 3643742 is about 153.8801282275.

The spelling of 3643742 in words is "three million, six hundred forty-three thousand, seven hundred forty-two".