766387 has 2 divisors, whose sum is σ = 766388. Its totient is φ = 766386.

The previous prime is 766373. The next prime is 766393. The reversal of 766387 is 783667.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 766387 - 2¹¹ = 764339 is a prime.

766387 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (766357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383193 + 383194.

It is an arithmetic number, because the mean of its divisors is an integer number (383194).

2⁷⁶⁶³⁸⁷ is an apocalyptic number.

766387 is a deficient number, since it is larger than the sum of its proper divisors (1).

766387 is an equidigital number, since it uses as much as digits as its factorization.

766387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 766387 is about 875.4353202836. The cubic root of 766387 is about 91.5129825209.

It can be divided in two parts, 7663 and 87, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 766387 in words is "seven hundred sixty-six thousand, three hundred eighty-seven".