3861061 has 8 divisors (see below), whose sum is σ = 3991064. Its totient is φ = 3732480.

The previous prime is 3861059. The next prime is 3861073. The reversal of 3861061 is 1601683.

It can be written as a sum of positive squares in 4 ways, for example, as 988036 + 2873025 = 994^2 + 1695^2 .

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

It is a 6-Lehmer number, since φ(3861061) divides (3861061-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 3861061 - 2¹ = 3861059 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 (3861041) 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, 8701 + ... + 9133.

It is an arithmetic number, because the mean of its divisors is an integer number (498883).

Almost surely, 2^3861061 is an apocalyptic number.

It is an amenable number.

3861061 is a deficient number, since it is larger than the sum of its proper divisors (130003).

3861061 is a wasteful number, since it uses less digits than its factorization.

3861061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 3861061 is about 1964.9582692770. The cubic root of 3861061 is about 156.8804721297.

The spelling of 3861061 in words is "three million, eight hundred sixty-one thousand, sixty-one".