3772661 has 4 divisors (see below), whose sum is σ = 3776832. Its totient is φ = 3768492.

The previous prime is 3772633. The next prime is 3772679. The reversal of 3772661 is 1662773.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3772661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3771661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95 + ... + 2748.

It is an arithmetic number, because the mean of its divisors is an integer number (944208).

Almost surely, 2^3772661 is an apocalyptic number.

It is an amenable number.

3772661 is a deficient number, since it is larger than the sum of its proper divisors (4171).

3772661 is a wasteful number, since it uses less digits than its factorization.

3772661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4170.

The product of its digits is 10584, while the sum is 32.

The square root of 3772661 is about 1942.3339053829. Note that the first 3 decimals coincide. The cubic root of 3772661 is about 155.6739436816.

The spelling of 3772661 in words is "three million, seven hundred seventy-two thousand, six hundred sixty-one".