620384064 has 56 divisors (see below), whose sum is σ = 1658404608. Its totient is φ = 204656640.

The previous prime is 620384057. The next prime is 620384071. The reversal of 620384064 is 460483026.

It is an interprime number because it is at equal distance from previous prime (620384057) and next prime (620384071).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1969 + ... + 35279.

It is an arithmetic number, because the mean of its divisors is an integer number (29614368).

Almost surely, 2^620384064 is an apocalyptic number.

620384064 is a gapful number since it is divisible by the number (64) 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 620384064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829202304).

620384064 is an abundant number, since it is smaller than the sum of its proper divisors (1038020544).

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

620384064 is a wasteful number, since it uses less digits than its factorization.

620384064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33423 (or 33413 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 620384064 is about 24907.5101927110. The cubic root of 620384064 is about 852.8779330070.

The spelling of 620384064 in words is "six hundred twenty million, three hundred eighty-four thousand, sixty-four".