769540 has 24 divisors (see below), whose sum is σ = 1635480. Its totient is φ = 304128.

The previous prime is 769487. The next prime is 769541. The reversal of 769540 is 45967.

769540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 103684 + 665856 = 322^2 + 816^2 .

It is not an unprimeable number, because it can be changed into a prime (769541) by changing a digit.

769540 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2004 + ... + 2356.

It is an arithmetic number, because the mean of its divisors is an integer number (68145).

2⁷⁶⁹⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

769540 is an abundant number, since it is smaller than the sum of its proper divisors (865940).

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

769540 is a wasteful number, since it uses less digits than its factorization.

769540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 469 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 769540 is about 877.2342902555. The cubic root of 769540 is about 91.6383089509.

The spelling of 769540 in words is "seven hundred sixty-nine thousand, five hundred forty".