620268021 has 12 divisors (see below), whose sum is σ = 897344448. Its totient is φ = 412865064.

The previous prime is 620268017. The next prime is 620268023. The reversal of 620268021 is 120862026.

It is not a de Polignac number, because 620268021 - 2² = 620268017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620268023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47805 + ... + 59378.

It is an arithmetic number, because the mean of its divisors is an integer number (74778704).

Almost surely, 2^620268021 is an apocalyptic number.

It is an amenable number.

620268021 is a deficient number, since it is larger than the sum of its proper divisors (277076427).

620268021 is a wasteful number, since it uses less digits than its factorization.

620268021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107832 (or 107829 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 620268021 is about 24905.1806056491. The cubic root of 620268021 is about 852.8247526782.

The spelling of 620268021 in words is "six hundred twenty million, two hundred sixty-eight thousand, twenty-one".