620015904 has 192 divisors, whose sum is σ = 1923264000. Its totient is φ = 193777920.

The previous prime is 620015881. The next prime is 620015909. The reversal of 620015904 is 409510026.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620015909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2938359 + ... + 2938569.

It is an arithmetic number, because the mean of its divisors is an integer number (10017000).

Almost surely, 2^620015904 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 620015904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961632000).

620015904 is an abundant number, since it is smaller than the sum of its proper divisors (1303248096).

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

620015904 is a wasteful number, since it uses less digits than its factorization.

620015904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 620015904 is about 24900.1185539346. The cubic root of 620015904 is about 852.7091893255.

The spelling of 620015904 in words is "six hundred twenty million, fifteen thousand, nine hundred four".