7657980 has 96 divisors (see below), whose sum is σ = 24046848. Its totient is φ = 1804800.

The previous prime is 7657967. The next prime is 7657987. The reversal of 7657980 is 897567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7657987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26919 + ... + 27201.

It is an arithmetic number, because the mean of its divisors is an integer number (250488).

Almost surely, 2^7657980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7657980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12023424).

7657980 is an abundant number, since it is smaller than the sum of its proper divisors (16388868).

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

7657980 is a wasteful number, since it uses less digits than its factorization.

7657980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 7657980 is about 2767.3055487242. The cubic root of 7657980 is about 197.1082229793.

The spelling of 7657980 in words is "seven million, six hundred fifty-seven thousand, nine hundred eighty".