3661802 has 4 divisors (see below), whose sum is σ = 5492706. Its totient is φ = 1830900.

The previous prime is 3661781. The next prime is 3661831. The reversal of 3661802 is 2081663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2081663 = 157 ⋅13259.

It can be written as a sum of positive squares in only one way, i.e., 2493241 + 1168561 = 1579^2 + 1081^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 915449 + ... + 915452.

Almost surely, 2^3661802 is an apocalyptic number.

3661802 is a deficient number, since it is larger than the sum of its proper divisors (1830904).

3661802 is a wasteful number, since it uses less digits than its factorization.

3661802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830903.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 3661802 is about 1913.5835492604. The cubic root of 3661802 is about 154.1339420518.

The spelling of 3661802 in words is "three million, six hundred sixty-one thousand, eight hundred two".