620134860 has 48 divisors (see below), whose sum is σ = 1738066176. Its totient is φ = 165208512.

The previous prime is 620134843. The next prime is 620134877. The reversal of 620134860 is 68431026.

It is an interprime number because it is at equal distance from previous prime (620134843) and next prime (620134877).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 65337 + ... + 74223.

It is an arithmetic number, because the mean of its divisors is an integer number (36209712).

Almost surely, 2^620134860 is an apocalyptic number.

620134860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620134860 is an abundant number, since it is smaller than the sum of its proper divisors (1117931316).

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

620134860 is a wasteful number, since it uses less digits than its factorization.

620134860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10062 (or 10060 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 620134860 is about 24902.5071026995. The cubic root of 620134860 is about 852.7637193181.

Adding to 620134860 its reverse (68431026), we get a palindrome (688565886).

The spelling of 620134860 in words is "six hundred twenty million, one hundred thirty-four thousand, eight hundred sixty".