612766 has 32 divisors (see below), whose sum is σ = 1202688. Its totient is φ = 227040.

The previous prime is 612763. The next prime is 612791. The reversal of 612766 is 667216.

612766 = T₂₃₁ + T₂₃₂ + ... + T₂₅₁.

612766 = 231² + 232² + ... + 241².

Its product of digits (3024) is a multiple of the sum of its prime divisors (216).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612763) 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 15 ways as a sum of consecutive naturals, for example, 3456 + ... + 3628.

It is an arithmetic number, because the mean of its divisors is an integer number (37584).

2⁶¹²⁷⁶⁶ is an apocalyptic number.

612766 is a deficient number, since it is larger than the sum of its proper divisors (589922).

612766 is a wasteful number, since it uses less digits than its factorization.

612766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216.

The product of its digits is 3024, while the sum is 28.

The square root of 612766 is about 782.7937148445. The cubic root of 612766 is about 84.9372547322.

It can be divided in two parts, 612 and 766, that added together give a triangular number (1378 = T₅₂).

The spelling of 612766 in words is "six hundred twelve thousand, seven hundred sixty-six".