766049491 has 4 divisors (see below), whose sum is σ = 775746400. Its totient is φ = 756352584.

The previous prime is 766049489. The next prime is 766049497. The reversal of 766049491 is 194940667.

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

It is a cyclic number.

It is not a de Polignac number, because 766049491 - 2¹ = 766049489 is a prime.

It is a super-3 number, since 3×766049491³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (766049497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4848336 + ... + 4848493.

It is an arithmetic number, because the mean of its divisors is an integer number (193936600).

Almost surely, 2^766049491 is an apocalyptic number.

766049491 is a deficient number, since it is larger than the sum of its proper divisors (9696909).

766049491 is an equidigital number, since it uses as much as digits as its factorization.

766049491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9696908.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 766049491 is about 27677.5990830130. The cubic root of 766049491 is about 914.9954675440.

The spelling of 766049491 in words is "seven hundred sixty-six million, forty-nine thousand, four hundred ninety-one".