3404071656 has 80 divisors (see below), whose sum is σ = 9567627300. Its totient is φ = 1130754816.

The previous prime is 3404071607. The next prime is 3404071667. The reversal of 3404071656 is 6561704043.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3103604100 + 300467556 = 55710^2 + 17334^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3404071656.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 180900 + ... + 198828.

Almost surely, 2^3404071656 is an apocalyptic number.

3404071656 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3404071656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4783813650).

3404071656 is an abundant number, since it is smaller than the sum of its proper divisors (6163555644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3404071656 is a wasteful number, since it uses less digits than its factorization.

3404071656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18240 (or 18227 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 3404071656 is about 58344.4226640388. The cubic root of 3404071656 is about 1504.2946045135.

Adding to 3404071656 its reverse (6561704043), we get a palindrome (9965775699).

The spelling of 3404071656 in words is "three billion, four hundred four million, seventy-one thousand, six hundred fifty-six".