1670616648 has 96 divisors (see below), whose sum is σ = 4771353600. Its totient is φ = 526608000.

The previous prime is 1670616643. The next prime is 1670616653. The reversal of 1670616648 is 8466160761.

It is an interprime number because it is at equal distance from previous prime (1670616643) and next prime (1670616653).

It is not an unprimeable number, because it can be changed into a prime (1670616643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1450873 + ... + 1452023.

It is an arithmetic number, because the mean of its divisors is an integer number (49701600).

Almost surely, 2^1670616648 is an apocalyptic number.

1670616648 is a gapful number since it is divisible by the number (18) 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 1670616648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2385676800).

1670616648 is an abundant number, since it is smaller than the sum of its proper divisors (3100736952).

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

1670616648 is a wasteful number, since it uses less digits than its factorization.

1670616648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243 (or 2236 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1670616648 is about 40873.1776107510. The cubic root of 1670616648 is about 1186.5670066679.

The spelling of 1670616648 in words is "one billion, six hundred seventy million, six hundred sixteen thousand, six hundred forty-eight".