766542 has 16 divisors (see below), whose sum is σ = 1752192. Its totient is φ = 219000.

The previous prime is 766541. The next prime is 766543. The reversal of 766542 is 245667.

It is an interprime number because it is at equal distance from previous prime (766541) and next prime (766543).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9084 + ... + 9167.

It is an arithmetic number, because the mean of its divisors is an integer number (109512).

2⁷⁶⁶⁵⁴² is an apocalyptic number.

766542 is an abundant number, since it is smaller than the sum of its proper divisors (985650).

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

766542 is a wasteful number, since it uses less digits than its factorization.

766542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18263.

The product of its digits is 10080, while the sum is 30.

The square root of 766542 is about 875.5238431933. The cubic root of 766542 is about 91.5191515348.

The spelling of 766542 in words is "seven hundred sixty-six thousand, five hundred forty-two".