7669940 has 24 divisors (see below), whose sum is σ = 16270632. Its totient is φ = 3036800.

The previous prime is 7669877. The next prime is 7669943. The reversal of 7669940 is 499667.

It can be written as a sum of positive squares in 4 ways, for example, as 583696 + 7086244 = 764^2 + 2662^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7669943) 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, 122 + ... + 3918.

It is an arithmetic number, because the mean of its divisors is an integer number (677943).

Almost surely, 2^7669940 is an apocalyptic number.

It is an amenable number.

7669940 is an abundant number, since it is smaller than the sum of its proper divisors (8600692).

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

7669940 is a wasteful number, since it uses less digits than its factorization.

7669940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907 (or 3905 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 7669940 is about 2769.4656524319. The cubic root of 7669940 is about 197.2107821470.

The spelling of 7669940 in words is "seven million, six hundred sixty-nine thousand, nine hundred forty".