1620696000 has 448 divisors, whose sum is σ = 6679655424. Its totient is φ = 336384000.

The previous prime is 1620695987. The next prime is 1620696013. The reversal of 1620696000 is 6960261.

It is an interprime number because it is at equal distance from previous prime (1620695987) and next prime (1620696013).

It is a tau number, because it is divible by the number of its divisors (448).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1847562 + ... + 1848438.

Almost surely, 2^1620696000 is an apocalyptic number.

1620696000 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 1620696000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3339827712).

1620696000 is an abundant number, since it is smaller than the sum of its proper divisors (5058959424).

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

1620696000 is a wasteful number, since it uses less digits than its factorization.

1620696000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1620696000 is about 40257.8687960503. The cubic root of 1620696000 is about 1174.6284625828.

The spelling of 1620696000 in words is "one billion, six hundred twenty million, six hundred ninety-six thousand".