3642706 has 4 divisors (see below), whose sum is σ = 5464062. Its totient is φ = 1821352.

The previous prime is 3642701. The next prime is 3642707. The reversal of 3642706 is 6072463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6072463 = 191 ⋅31793.

It can be written as a sum of positive squares in only one way, i.e., 2859481 + 783225 = 1691^2 + 885^2 .

It is not an unprimeable number, because it can be changed into a prime (3642701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910675 + ... + 910678.

Almost surely, 2^3642706 is an apocalyptic number.

3642706 is a deficient number, since it is larger than the sum of its proper divisors (1821356).

3642706 is a wasteful number, since it uses less digits than its factorization.

3642706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821355.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 3642706 is about 1908.5874357755. The cubic root of 3642706 is about 153.8655429537.

The spelling of 3642706 in words is "three million, six hundred forty-two thousand, seven hundred six".