3655490 has 16 divisors (see below), whose sum is σ = 6621048. Its totient is φ = 1453056.

The previous prime is 3655481. The next prime is 3655499. The reversal of 3655490 is 945563.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3655481) and next prime (3655499).

It can be written as a sum of positive squares in 4 ways, for example, as 2486929 + 1168561 = 1577^2 + 1081^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3655499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674 + ... + 2786.

Almost surely, 2^3655490 is an apocalyptic number.

3655490 is a deficient number, since it is larger than the sum of its proper divisors (2965558).

3655490 is a wasteful number, since it uses less digits than its factorization.

3655490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 3655490 is about 1911.9335762521. The cubic root of 3655490 is about 154.0453287603.

The spelling of 3655490 in words is "three million, six hundred fifty-five thousand, four hundred ninety".