3649970 has 8 divisors (see below), whose sum is σ = 6569964. Its totient is φ = 1459984.

The previous prime is 3649967. The next prime is 3649981. The reversal of 3649970 is 799463.

3649970 = 546² + 547² + ... + 557².

It can be written as a sum of positive squares in 2 ways, for example, as 3621409 + 28561 = 1903^2 + 169^2 .

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

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 182489 + ... + 182508.

Almost surely, 2^3649970 is an apocalyptic number.

3649970 is a deficient number, since it is larger than the sum of its proper divisors (2919994).

3649970 is a wasteful number, since it uses less digits than its factorization.

3649970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365004.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 3649970 is about 1910.4894660793. The cubic root of 3649970 is about 153.9677505979.

It can be divided in two parts, 36499 and 70, that multiplied together give a triangular number (2554930 = T₂₂₆₀).

The spelling of 3649970 in words is "three million, six hundred forty-nine thousand, nine hundred seventy".