770040 has 128 divisors (see below), whose sum is σ = 2764800. Its totient is φ = 190080.

The previous prime is 770039. The next prime is 770041. The reversal of 770040 is 40077.

It is an interprime number because it is at equal distance from previous prime (770039) and next prime (770041).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 769995 and 770022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770041) 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, 24825 + ... + 24855.

It is an arithmetic number, because the mean of its divisors is an integer number (21600).

2⁷⁷⁰⁰⁴⁰ 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 770040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1382400).

770040 is an abundant number, since it is smaller than the sum of its proper divisors (1994760).

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

770040 is a wasteful number, since it uses less digits than its factorization.

770040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 18.

The square root of 770040 is about 877.5192305585. The cubic root of 770040 is about 91.6581516425.

The spelling of 770040 in words is "seven hundred seventy thousand, forty", and thus it is an iban number.