620266240 has 72 divisors (see below), whose sum is σ = 1620834768. Its totient is φ = 225546240.

The previous prime is 620266237. The next prime is 620266243. The reversal of 620266240 is 42662026.

It is an interprime number because it is at equal distance from previous prime (620266237) and next prime (620266243).

It is a junction number, because it is equal to n+sod(n) for n = 620266199 and 620266208.

It is not an unprimeable number, because it can be changed into a prime (620266243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7947 + ... + 36106.

It is an arithmetic number, because the mean of its divisors is an integer number (22511594).

Almost surely, 2^620266240 is an apocalyptic number.

It is an amenable number.

620266240 is an abundant number, since it is smaller than the sum of its proper divisors (1000568528).

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

620266240 is a wasteful number, since it uses less digits than its factorization.

620266240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44085 (or 44071 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 620266240 is about 24905.1448500104. The cubic root of 620266240 is about 852.8239364277.

The spelling of 620266240 in words is "six hundred twenty million, two hundred sixty-six thousand, two hundred forty".