3678261 has 4 divisors (see below), whose sum is σ = 4904352. Its totient is φ = 2452172.

The previous prime is 3678247. The next prime is 3678287. The reversal of 3678261 is 1628763.

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 an emirpimes, since its reverse is a distinct semiprime: 1628763 = 3 ⋅542921.

It is a cyclic number.

It is not a de Polignac number, because 3678261 - 2¹¹ = 3676213 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3678211) 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, 613041 + ... + 613046.

It is an arithmetic number, because the mean of its divisors is an integer number (1226088).

Almost surely, 2^3678261 is an apocalyptic number.

It is an amenable number.

3678261 is a deficient number, since it is larger than the sum of its proper divisors (1226091).

3678261 is a wasteful number, since it uses less digits than its factorization.

3678261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226090.

The product of its digits is 12096, while the sum is 33.

The square root of 3678261 is about 1917.8792975576. The cubic root of 3678261 is about 154.3645297144.

The spelling of 3678261 in words is "three million, six hundred seventy-eight thousand, two hundred sixty-one".