1670464620 has 144 divisors (see below), whose sum is σ = 5732633088. Its totient is φ = 404948160.

The previous prime is 1670464613. The next prime is 1670464643. The reversal of 1670464620 is 264640761.

1670464620 is a `hidden beast` number, since 1 + 6 + 7 + 0 + 4 + 646 + 2 + 0 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37837 + ... + 69083.

It is an arithmetic number, because the mean of its divisors is an integer number (39809952).

Almost surely, 2^1670464620 is an apocalyptic number.

1670464620 is a gapful number since it is divisible by the number (10) 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 1670464620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2866316544).

1670464620 is an abundant number, since it is smaller than the sum of its proper divisors (4062168468).

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

1670464620 is a wasteful number, since it uses less digits than its factorization.

1670464620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31282 (or 31268 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 1670464620 is about 40871.3178157984. The cubic root of 1670464620 is about 1186.5310125972.

The spelling of 1670464620 in words is "one billion, six hundred seventy million, four hundred sixty-four thousand, six hundred twenty".