771132493 has 4 divisors (see below), whose sum is σ = 771196320. Its totient is φ = 771068668.

The previous prime is 771132473. The next prime is 771132511. The reversal of 771132493 is 394231177.

It is a happy number.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-771132493 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 (771132473) 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 3 ways as a sum of consecutive naturals, for example, 7633 + ... + 40006.

It is an arithmetic number, because the mean of its divisors is an integer number (192799080).

Almost surely, 2^771132493 is an apocalyptic number.

It is an amenable number.

771132493 is a deficient number, since it is larger than the sum of its proper divisors (63827).

771132493 is a wasteful number, since it uses less digits than its factorization.

771132493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63826.

The product of its digits is 31752, while the sum is 37.

The square root of 771132493 is about 27769.2724607614. The cubic root of 771132493 is about 917.0147777726.

It can be divided in two parts, 7711 and 32493, that added together give a palindrome (40204).

The spelling of 771132493 in words is "seven hundred seventy-one million, one hundred thirty-two thousand, four hundred ninety-three".