840764 has 6 divisors (see below), whose sum is σ = 1471344. Its totient is φ = 420380.

The previous prime is 840761. The next prime is 840767. The reversal of 840764 is 467048.

840764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (840761) and next prime (840767).

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105092 + ... + 105099.

It is an arithmetic number, because the mean of its divisors is an integer number (245224).

2⁸⁴⁰⁷⁶⁴ is an apocalyptic number.

It is an amenable number.

840764 is a deficient number, since it is larger than the sum of its proper divisors (630580).

840764 is a wasteful number, since it uses less digits than its factorization.

840764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210195 (or 210193 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 840764 is about 916.9318404331. The cubic root of 840764 is about 94.3824766382.

The spelling of 840764 in words is "eight hundred forty thousand, seven hundred sixty-four".