1670005216 has 72 divisors (see below), whose sum is σ = 3730732992. Its totient is φ = 734553600.

The previous prime is 1670005201. The next prime is 1670005243. The reversal of 1670005216 is 6125000761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113076 + ... + 126988.

It is an arithmetic number, because the mean of its divisors is an integer number (51815736).

Almost surely, 2^1670005216 is an apocalyptic number.

1670005216 is a gapful number since it is divisible by the number (16) 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 1670005216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1865366496).

1670005216 is an abundant number, since it is smaller than the sum of its proper divisors (2060727776).

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

1670005216 is a wasteful number, since it uses less digits than its factorization.

1670005216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13976 (or 13957 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 1670005216 is about 40865.6973022607. The cubic root of 1670005216 is about 1186.4222310713.

Adding to 1670005216 its reverse (6125000761), we get a palindrome (7795005977).

The spelling of 1670005216 in words is "one billion, six hundred seventy million, five thousand, two hundred sixteen".