620931792 has 80 divisors (see below), whose sum is σ = 1744416128. Its totient is φ = 189181440.

The previous prime is 620931769. The next prime is 620931793. The reversal of 620931792 is 297139026.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 620931792.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620931793) 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 15 ways as a sum of consecutive naturals, for example, 59442 + ... + 69102.

Almost surely, 2^620931792 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 620931792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (872208064).

620931792 is an abundant number, since it is smaller than the sum of its proper divisors (1123484336).

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

620931792 is a wasteful number, since it uses less digits than its factorization.

620931792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9788 (or 9782 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 620931792 is about 24918.5030047955. The cubic root of 620931792 is about 853.1288569859.

The spelling of 620931792 in words is "six hundred twenty million, nine hundred thirty-one thousand, seven hundred ninety-two".