7920620 has 12 divisors (see below), whose sum is σ = 16633344. Its totient is φ = 3168240.

The previous prime is 7920613. The next prime is 7920629. The reversal of 7920620 is 260297.

It is a self number, because there is not a number n which added to its sum of digits gives 7920620.

It is not an unprimeable number, because it can be changed into a prime (7920629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197996 + ... + 198035.

It is an arithmetic number, because the mean of its divisors is an integer number (1386112).

Almost surely, 2^7920620 is an apocalyptic number.

It is an amenable number.

7920620 is an abundant number, since it is smaller than the sum of its proper divisors (8712724).

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

7920620 is a wasteful number, since it uses less digits than its factorization.

7920620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396040 (or 396038 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 7920620 is about 2814.3596074418. The cubic root of 7920620 is about 199.3362999475.

The spelling of 7920620 in words is "seven million, nine hundred twenty thousand, six hundred twenty".