3645970 has 32 divisors (see below), whose sum is σ = 6874560. Its totient is φ = 1391040.

The previous prime is 3645959. The next prime is 3645977. The reversal of 3645970 is 795463.

3645970 = T₁₀₁ + T₁₀₂ + ... + T₂₈₃.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (3645977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26161 + ... + 26299.

It is an arithmetic number, because the mean of its divisors is an integer number (214830).

Almost surely, 2^3645970 is an apocalyptic number.

3645970 is a deficient number, since it is larger than the sum of its proper divisors (3228590).

3645970 is a wasteful number, since it uses less digits than its factorization.

3645970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 3645970 is about 1909.4423269636. The cubic root of 3645970 is about 153.9114856499.

The spelling of 3645970 in words is "three million, six hundred forty-five thousand, nine hundred seventy".