620812949660 has 24 divisors (see below), whose sum is σ = 1335504932496. Its totient is φ = 242268467840.

The previous prime is 620812949621. The next prime is 620812949699. The reversal of 620812949660 is 66949218026.

It is an interprime number because it is at equal distance from previous prime (620812949621) and next prime (620812949699).

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, 378543662 + ... + 378545301.

It is an arithmetic number, because the mean of its divisors is an integer number (55646038854).

Almost surely, 2^620812949660 is an apocalyptic number.

It is an amenable number.

620812949660 is an abundant number, since it is smaller than the sum of its proper divisors (714691982836).

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

620812949660 is a wasteful number, since it uses less digits than its factorization.

620812949660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757089013 (or 757089011 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 620812949660 in words is "six hundred twenty billion, eight hundred twelve million, nine hundred forty-nine thousand, six hundred sixty".