769840 has 20 divisors (see below), whose sum is σ = 1790064. Its totient is φ = 307904.

The previous prime is 769837. The next prime is 769871. The reversal of 769840 is 48967.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 769796 and 769805.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 769840.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4732 + ... + 4891.

2⁷⁶⁹⁸⁴⁰ is an apocalyptic number.

It is an amenable number.

769840 is an abundant number, since it is smaller than the sum of its proper divisors (1020224).

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

769840 is a wasteful number, since it uses less digits than its factorization.

769840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9636 (or 9630 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 769840 is about 877.4052655415. The cubic root of 769840 is about 91.6502155969.

The spelling of 769840 in words is "seven hundred sixty-nine thousand, eight hundred forty".