3976661 has 8 divisors (see below), whose sum is σ = 4313400. Its totient is φ = 3644352.

The previous prime is 3976633. The next prime is 3976663. The reversal of 3976661 is 1666793.

It can be written as a sum of positive squares in 4 ways, for example, as 625 + 3976036 = 25^2 + 1994^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3976661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3976663) 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, 911 + ... + 2963.

It is an arithmetic number, because the mean of its divisors is an integer number (539175).

Almost surely, 2^3976661 is an apocalyptic number.

It is an amenable number.

3976661 is a deficient number, since it is larger than the sum of its proper divisors (336739).

3976661 is a wasteful number, since it uses less digits than its factorization.

3976661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215.

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

The square root of 3976661 is about 1994.1567140022. The cubic root of 3976661 is about 158.4307665002.

The spelling of 3976661 in words is "three million, nine hundred seventy-six thousand, six hundred sixty-one".