1696445856 has 540 divisors, whose sum is σ = 6290850258. Its totient is φ = 446777856.

The previous prime is 1696445843. The next prime is 1696445873. The reversal of 1696445856 is 6585446961.

1696445856 is a `hidden beast` number, since 16 + 9 + 6 + 44 + 585 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1123322256 + 573123600 = 33516^2 + 23940^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 45849870 + ... + 45849906.

Almost surely, 2^1696445856 is an apocalyptic number.

1696445856 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 1696445856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3145425129).

1696445856 is an abundant number, since it is smaller than the sum of its proper divisors (4594404402).

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

1696445856 is a wasteful number, since it uses less digits than its factorization.

1696445856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 68 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The square root of 1696445856 is about 41187.9333786001. The cubic root of 1696445856 is about 1192.6508839580.

The spelling of 1696445856 in words is "one billion, six hundred ninety-six million, four hundred forty-five thousand, eight hundred fifty-six".