763664 has 20 divisors (see below), whose sum is σ = 1614480. Its totient is φ = 347040.

The previous prime is 763663. The next prime is 763673. The reversal of 763664 is 466367.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 763664.

It is not an unprimeable number, because it can be changed into a prime (763663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1994 + ... + 2345.

It is an arithmetic number, because the mean of its divisors is an integer number (80724).

2⁷⁶³⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

763664 is an abundant number, since it is smaller than the sum of its proper divisors (850816).

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

763664 is a wasteful number, since it uses less digits than its factorization.

763664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4358 (or 4352 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 763664 is about 873.8787101194. The cubic root of 763664 is about 91.4044709542.

The spelling of 763664 in words is "seven hundred sixty-three thousand, six hundred sixty-four".