1606211670 has 96 divisors (see below), whose sum is σ = 4679347968. Its totient is φ = 351164352.

The previous prime is 1606211657. The next prime is 1606211671. The reversal of 1606211670 is 761126061.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606211671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10057 + ... + 57563.

It is an arithmetic number, because the mean of its divisors is an integer number (48743208).

Almost surely, 2^1606211670 is an apocalyptic number.

1606211670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1606211670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2339673984).

1606211670 is an abundant number, since it is smaller than the sum of its proper divisors (3073136298).

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

1606211670 is a wasteful number, since it uses less digits than its factorization.

1606211670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47554 (or 47547 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1606211670 is about 40077.5706599090. The cubic root of 1606211670 is about 1171.1187268756.

The spelling of 1606211670 in words is "one billion, six hundred six million, two hundred eleven thousand, six hundred seventy".