3420578217 has 32 divisors (see below), whose sum is σ = 5523598080. Its totient is φ = 1841172480.

The previous prime is 3420578201. The next prime is 3420578281. The reversal of 3420578217 is 7128750243.

It is not a de Polignac number, because 3420578217 - 2⁴ = 3420578201 is a prime.

It is a super-2 number, since 2×3420578217² = 23400710677229798178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3420578297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43528 + ... + 93465.

It is an arithmetic number, because the mean of its divisors is an integer number (172612440).

Almost surely, 2^3420578217 is an apocalyptic number.

It is an amenable number.

3420578217 is a deficient number, since it is larger than the sum of its proper divisors (2103019863).

3420578217 is a wasteful number, since it uses less digits than its factorization.

3420578217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137073.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 3420578217 is about 58485.7095109566. The cubic root of 3420578217 is about 1506.7221585001.

The spelling of 3420578217 in words is "three billion, four hundred twenty million, five hundred seventy-eight thousand, two hundred seventeen".