766231157 has 8 divisors (see below), whose sum is σ = 811552896. Its totient is φ = 720937152.

The previous prime is 766231129. The next prime is 766231163. The reversal of 766231157 is 751132667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 766231157 - 2²⁰ = 765182581 is a prime.

It is a super-2 number, since 2×766231157² = 1174220371915117298, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 766231157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766231117) 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 7 ways as a sum of consecutive naturals, for example, 84548 + ... + 93170.

It is an arithmetic number, because the mean of its divisors is an integer number (101444112).

Almost surely, 2^766231157 is an apocalyptic number.

It is an amenable number.

766231157 is a deficient number, since it is larger than the sum of its proper divisors (45321739).

766231157 is a wasteful number, since it uses less digits than its factorization.

766231157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13867.

The product of its digits is 52920, while the sum is 38.

The square root of 766231157 is about 27680.8807121450. The cubic root of 766231157 is about 915.0677911691.

The spelling of 766231157 in words is "seven hundred sixty-six million, two hundred thirty-one thousand, one hundred fifty-seven".