620414664 has 64 divisors (see below), whose sum is σ = 1621002240. Its totient is φ = 197682240.

The previous prime is 620414653. The next prime is 620414671. The reversal of 620414664 is 466414026.

620414664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 42109 + ... + 54899.

It is an arithmetic number, because the mean of its divisors is an integer number (25328160).

Almost surely, 2^620414664 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 620414664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810501120).

620414664 is an abundant number, since it is smaller than the sum of its proper divisors (1000587576).

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

620414664 is a wasteful number, since it uses less digits than its factorization.

620414664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12890 (or 12886 counting only the distinct ones).

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

The square root of 620414664 is about 24908.1244576945. The cubic root of 620414664 is about 852.8919553077.

The spelling of 620414664 in words is "six hundred twenty million, four hundred fourteen thousand, six hundred sixty-four".