620806680 has 384 divisors, whose sum is σ = 2394100800. Its totient is φ = 143824896.

The previous prime is 620806679. The next prime is 620806709. The reversal of 620806680 is 86608026.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36518032 + ... + 36518048.

Almost surely, 2^620806680 is an apocalyptic number.

620806680 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 620806680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1197050400).

620806680 is an abundant number, since it is smaller than the sum of its proper divisors (1773294120).

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

620806680 is a wasteful number, since it uses less digits than its factorization.

620806680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 620806680 is about 24915.9924546465. The cubic root of 620806680 is about 853.0715539517.

The spelling of 620806680 in words is "six hundred twenty million, eight hundred six thousand, six hundred eighty".