766650 has 48 divisors (see below), whose sum is σ = 2008800. Its totient is φ = 192960.

The previous prime is 766639. The next prime is 766651. The reversal of 766650 is 56667.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (766651) by changing a digit.

766650 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 23 ways as a sum of consecutive naturals, for example, 2716 + ... + 2984.

It is an arithmetic number, because the mean of its divisors is an integer number (41850).

2⁷⁶⁶⁶⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 766650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1004400).

766650 is an abundant number, since it is smaller than the sum of its proper divisors (1242150).

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

766650 is a wasteful number, since it uses less digits than its factorization.

766650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 766650 is about 875.5855183818. The cubic root of 766650 is about 91.5234494529.

The spelling of 766650 in words is "seven hundred sixty-six thousand, six hundred fifty".