3261290681 has 8 divisors (see below), whose sum is σ = 3712457664. Its totient is φ = 2835904720.

The previous prime is 3261290677. The next prime is 3261290689. The reversal of 3261290681 is 1860921623.

It is a happy number.

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

It is not a de Polignac number, because 3261290681 - 2² = 3261290677 is a prime.

It is a super-2 number, since 2×3261290681² = 21272033811954887522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3261290689) 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, 6444986 + ... + 6445491.

It is an arithmetic number, because the mean of its divisors is an integer number (464057208).

Almost surely, 2^3261290681 is an apocalyptic number.

It is an amenable number.

3261290681 is a deficient number, since it is larger than the sum of its proper divisors (451166983).

3261290681 is a wasteful number, since it uses less digits than its factorization.

3261290681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12890511.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 3261290681 is about 57107.7112218657. The cubic root of 3261290681 is about 1482.9613643862.

The spelling of 3261290681 in words is "three billion, two hundred sixty-one million, two hundred ninety thousand, six hundred eighty-one".