3278561005 has 16 divisors (see below), whose sum is σ = 3990228480. Its totient is φ = 2585681728.

The previous prime is 3278561003. The next prime is 3278561021. The reversal of 3278561005 is 5001658723.

It is a cyclic number.

It is not a de Polignac number, because 3278561005 - 2¹ = 3278561003 is a prime.

It is a super-2 number, since 2×3278561005² = 21497924527013220050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3278561003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190539 + ... + 207031.

It is an arithmetic number, because the mean of its divisors is an integer number (249389280).

Almost surely, 2^3278561005 is an apocalyptic number.

It is an amenable number.

3278561005 is a deficient number, since it is larger than the sum of its proper divisors (711667475).

3278561005 is a wasteful number, since it uses less digits than its factorization.

3278561005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17060.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 3278561005 is about 57258.7199036094. The cubic root of 3278561005 is about 1485.5744553149.

The spelling of 3278561005 in words is "three billion, two hundred seventy-eight million, five hundred sixty-one thousand, five".