766402791 has 64 divisors (see below), whose sum is σ = 1374105600. Its totient is φ = 367891200.

The previous prime is 766402783. The next prime is 766402799. The reversal of 766402791 is 197204667.

It is an interprime number because it is at equal distance from previous prime (766402783) and next prime (766402799).

It is not a de Polignac number, because 766402791 - 2³ = 766402783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766402799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 177820 + ... + 182078.

It is an arithmetic number, because the mean of its divisors is an integer number (21470400).

Almost surely, 2^766402791 is an apocalyptic number.

766402791 is a deficient number, since it is larger than the sum of its proper divisors (607702809).

766402791 is a wasteful number, since it uses less digits than its factorization.

766402791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4340.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 766402791 is about 27683.9807650562. The cubic root of 766402791 is about 915.1361104217.

The spelling of 766402791 in words is "seven hundred sixty-six million, four hundred two thousand, seven hundred ninety-one".