766442 has 4 divisors (see below), whose sum is σ = 1149666. Its totient is φ = 383220.

The previous prime is 766439. The next prime is 766453. The reversal of 766442 is 244667.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 737881 + 28561 = 859^2 + 169^2 .

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191609 + ... + 191612.

2⁷⁶⁶⁴⁴² is an apocalyptic number.

766442 is a deficient number, since it is larger than the sum of its proper divisors (383224).

766442 is a wasteful number, since it uses less digits than its factorization.

766442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383223.

The product of its digits is 8064, while the sum is 29.

The square root of 766442 is about 875.4667326632. The cubic root of 766442 is about 91.5151716210.

The spelling of 766442 in words is "seven hundred sixty-six thousand, four hundred forty-two".