766554133 has 4 divisors (see below), whose sum is σ = 769051360. Its totient is φ = 764056908.

The previous prime is 766554091. The next prime is 766554167. The reversal of 766554133 is 331455667.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 331455667 = 2143 ⋅154669.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-766554133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766554533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1248153 + ... + 1248766.

It is an arithmetic number, because the mean of its divisors is an integer number (192262840).

Almost surely, 2^766554133 is an apocalyptic number.

It is an amenable number.

766554133 is a deficient number, since it is larger than the sum of its proper divisors (2497227).

766554133 is a wasteful number, since it uses less digits than its factorization.

766554133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497226.

The product of its digits is 226800, while the sum is 40.

The square root of 766554133 is about 27686.7140159319. The cubic root of 766554133 is about 915.1963439418.

The spelling of 766554133 in words is "seven hundred sixty-six million, five hundred fifty-four thousand, one hundred thirty-three".