3661722 has 12 divisors (see below), whose sum is σ = 7933770. Its totient is φ = 1220568.

The previous prime is 3661703. The next prime is 3661733. The reversal of 3661722 is 2271663.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3651921 + 9801 = 1911^2 + 99^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101697 + ... + 101732.

Almost surely, 2^3661722 is an apocalyptic number.

3661722 is an abundant number, since it is smaller than the sum of its proper divisors (4272048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3661722 is a wasteful number, since it uses less digits than its factorization.

3661722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203437 (or 203434 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 3661722 is about 1913.5626459565. The cubic root of 3661722 is about 154.1328195803.

The spelling of 3661722 in words is "three million, six hundred sixty-one thousand, seven hundred twenty-two".