1601702004 has 72 divisors (see below), whose sum is σ = 4378977120. Its totient is φ = 454313664.

The previous prime is 1601701963. The next prime is 1601702021. The reversal of 1601702004 is 4002071061.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71934 + ... + 91530.

Almost surely, 2^1601702004 is an apocalyptic number.

1601702004 is a gapful number since it is divisible by the number (14) 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 1601702004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2189488560).

1601702004 is an abundant number, since it is smaller than the sum of its proper divisors (2777275116).

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

1601702004 is a wasteful number, since it uses less digits than its factorization.

1601702004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19757 (or 19748 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1601702004 is about 40021.2693951604. The cubic root of 1601702004 is about 1170.0216724746.

Adding to 1601702004 its reverse (4002071061), we get a palindrome (5603773065).

The spelling of 1601702004 in words is "one billion, six hundred one million, seven hundred two thousand, four".