7621980 has 24 divisors (see below), whose sum is σ = 21341712. Its totient is φ = 2032512.

The previous prime is 7621961. The next prime is 7621981. The reversal of 7621980 is 891267.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7621981) 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, 63457 + ... + 63576.

It is an arithmetic number, because the mean of its divisors is an integer number (889238).

Almost surely, 2^7621980 is an apocalyptic number.

It is an amenable number.

7621980 is an abundant number, since it is smaller than the sum of its proper divisors (13719732).

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

7621980 is a wasteful number, since it uses less digits than its factorization.

7621980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127045 (or 127043 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 7621980 is about 2760.7933642343. The cubic root of 7621980 is about 196.7988705402.

The spelling of 7621980 in words is "seven million, six hundred twenty-one thousand, nine hundred eighty".