3420546781 has 8 divisors (see below), whose sum is σ = 3581131680. Its totient is φ = 3262804272.

The previous prime is 3420546769. The next prime is 3420546803. The reversal of 3420546781 is 1876450243.

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 3420546781 - 2¹⁷ = 3420415709 is a prime.

It is a super-2 number, since 2×3420546781² = 23400280562018923922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420546281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 708135 + ... + 712948.

It is an arithmetic number, because the mean of its divisors is an integer number (447641460).

Almost surely, 2^3420546781 is an apocalyptic number.

It is an amenable number.

3420546781 is a deficient number, since it is larger than the sum of its proper divisors (160584899).

3420546781 is a wasteful number, since it uses less digits than its factorization.

3420546781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421195.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 3420546781 is about 58485.4407609278. The cubic root of 3420546781 is about 1506.7175427637.

The spelling of 3420546781 in words is "three billion, four hundred twenty million, five hundred forty-six thousand, seven hundred eighty-one".