620691712 has 36 divisors (see below), whose sum is σ = 1247943760. Its totient is φ = 308095488.

The previous prime is 620691683. The next prime is 620691719. The reversal of 620691712 is 217196026.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (620691719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26863 + ... + 44305.

Almost surely, 2^620691712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620691712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (623971880).

620691712 is an abundant number, since it is smaller than the sum of its proper divisors (627252048).

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

620691712 is a wasteful number, since it uses less digits than its factorization.

620691712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17598 (or 17584 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 620691712 is about 24913.6852352276. The cubic root of 620691712 is about 853.0188902221.

The spelling of 620691712 in words is "six hundred twenty million, six hundred ninety-one thousand, seven hundred twelve".