620767680 has 112 divisors (see below), whose sum is σ = 2122590624. Its totient is φ = 152801280.

The previous prime is 620767657. The next prime is 620767711. The reversal of 620767680 is 86767026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12391 + ... + 37350.

It is an arithmetic number, because the mean of its divisors is an integer number (18951702).

Almost surely, 2^620767680 is an apocalyptic number.

620767680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620767680 is an abundant number, since it is smaller than the sum of its proper divisors (1501822944).

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

620767680 is a wasteful number, since it uses less digits than its factorization.

620767680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49774 (or 49764 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 620767680 is about 24915.2098124820. The cubic root of 620767680 is about 853.0536898358.

The spelling of 620767680 in words is "six hundred twenty million, seven hundred sixty-seven thousand, six hundred eighty".