7980642 has 12 divisors (see below), whose sum is σ = 17291430. Its totient is φ = 2660208.

The previous prime is 7980629. The next prime is 7980673. The reversal of 7980642 is 2460897.

7980642 is a `hidden beast` number, since 7 + 9 + 8 + 0 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6859161 + 1121481 = 2619^2 + 1059^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7980597 and 7980606.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221667 + ... + 221702.

Almost surely, 2^7980642 is an apocalyptic number.

7980642 is an abundant number, since it is smaller than the sum of its proper divisors (9310788).

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

7980642 is a wasteful number, since it uses less digits than its factorization.

7980642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443377 (or 443374 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 7980642 is about 2825.0030088480. The cubic root of 7980642 is about 199.8385530428.

The spelling of 7980642 in words is "seven million, nine hundred eighty thousand, six hundred forty-two".