620861024 has 48 divisors (see below), whose sum is σ = 1470470400. Its totient is φ = 252077184.

The previous prime is 620860997. The next prime is 620861083. The reversal of 620861024 is 420168026.

It is a super-2 number, since 2×620861024² = 770936822244657152, which contains 22 as substring.

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, 68684 + ... + 77195.

It is an arithmetic number, because the mean of its divisors is an integer number (30634800).

Almost surely, 2^620861024 is an apocalyptic number.

It is an amenable number.

620861024 is an abundant number, since it is smaller than the sum of its proper divisors (849609376).

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

620861024 is a wasteful number, since it uses less digits than its factorization.

620861024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145915 (or 145907 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 620861024 is about 24917.0829753404. The cubic root of 620861024 is about 853.0964452044.

The spelling of 620861024 in words is "six hundred twenty million, eight hundred sixty-one thousand, twenty-four".