6404070 has 64 divisors (see below), whose sum is σ = 16873920. Its totient is φ = 1548288.

The previous prime is 6404063. The next prime is 6404089. The reversal of 6404070 is 704046.

It is a super-3 number, since 3×6404070³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14574 + ... + 15006.

It is an arithmetic number, because the mean of its divisors is an integer number (263655).

Almost surely, 2^6404070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6404070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8436960).

6404070 is an abundant number, since it is smaller than the sum of its proper divisors (10469850).

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

6404070 is a wasteful number, since it uses less digits than its factorization.

6404070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 6404070 is about 2530.6264046674. The cubic root of 6404070 is about 185.7029018100.

The spelling of 6404070 in words is "six million, four hundred four thousand, seventy".