3420691865 has 8 divisors (see below), whose sum is σ = 4154286528. Its totient is φ = 2703582640.

The previous prime is 3420691853. The next prime is 3420691871. The reversal of 3420691865 is 5681960243.

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

It is not a de Polignac number, because 3420691865 - 2⁸ = 3420691609 is a prime.

It is a super-2 number, since 2×3420691865² = 23402265670554356450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 4120901 + ... + 4121730.

It is an arithmetic number, because the mean of its divisors is an integer number (519285816).

Almost surely, 2^3420691865 is an apocalyptic number.

It is an amenable number.

3420691865 is a deficient number, since it is larger than the sum of its proper divisors (733594663).

3420691865 is an equidigital number, since it uses as much as digits as its factorization.

3420691865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8242719.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 3420691865 is about 58486.6810906552. The cubic root of 3420691865 is about 1506.7388451588.

The spelling of 3420691865 in words is "three billion, four hundred twenty million, six hundred ninety-one thousand, eight hundred sixty-five".