3246947681 has 8 divisors (see below), whose sum is σ = 3255186528. Its totient is φ = 3238720000.

The previous prime is 3246947663. The next prime is 3246947687. The reversal of 3246947681 is 1867496423.

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

It is a cyclic number.

It is not a de Polignac number, because 3246947681 - 2¹⁰ = 3246946657 is a prime.

It is a super-2 number, since 2×3246947681² = 21085338486302555522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3246947687) 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, 928346 + ... + 931836.

It is an arithmetic number, because the mean of its divisors is an integer number (406898316).

Almost surely, 2^3246947681 is an apocalyptic number.

It is an amenable number.

3246947681 is a deficient number, since it is larger than the sum of its proper divisors (8238847).

3246947681 is a wasteful number, since it uses less digits than its factorization.

3246947681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5583.

The product of its digits is 1741824, while the sum is 50.

The square root of 3246947681 is about 56981.9943578671. The cubic root of 3246947681 is about 1480.7841718786.

The spelling of 3246947681 in words is "three billion, two hundred forty-six million, nine hundred forty-seven thousand, six hundred eighty-one".