1696620420 has 144 divisors (see below), whose sum is σ = 5664701952. Its totient is φ = 407608320.

The previous prime is 1696620407. The next prime is 1696620433. The reversal of 1696620420 is 240266961.

1696620420 is a `hidden beast` number, since 1 + 6 + 9 + 6 + 620 + 4 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (1696620407) and next prime (1696620433).

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, 219949 + ... + 227531.

It is an arithmetic number, because the mean of its divisors is an integer number (39338208).

Almost surely, 2^1696620420 is an apocalyptic number.

1696620420 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 1696620420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2832350976).

1696620420 is an abundant number, since it is smaller than the sum of its proper divisors (3968081532).

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

1696620420 is a wasteful number, since it uses less digits than its factorization.

1696620420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7722 (or 7717 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 1696620420 is about 41190.0524398792. The cubic root of 1696620420 is about 1192.6917904149.

The spelling of 1696620420 in words is "one billion, six hundred ninety-six million, six hundred twenty thousand, four hundred twenty".