620691456000 has 1280 divisors, whose sum is σ = 2638181145600. Its totient is φ = 125829120000.

The previous prime is 620691455987. The next prime is 620691456019. The reversal of 620691456000 is 654196026.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a self number, because there is not a number n which added to its sum of digits gives 620691456000.

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, 15138815980 + ... + 15138816020.

It is an arithmetic number, because the mean of its divisors is an integer number (2061079020).

Almost surely, 2^620691456000 is an apocalyptic number.

620691456000 is a gapful number since it is divisible by the number (60) 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 620691456000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1319090572800).

620691456000 is an abundant number, since it is smaller than the sum of its proper divisors (2017489689600).

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

620691456000 is an frugal number, since it uses more digits than its factorization.

620691456000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 620691456000 in words is "six hundred twenty billion, six hundred ninety-one million, four hundred fifty-six thousand".