766967506 has 4 divisors (see below), whose sum is σ = 1150451262. Its totient is φ = 383483752.

The previous prime is 766967501. The next prime is 766967549. The reversal of 766967506 is 605769667.

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

It can be written as a sum of positive squares in only one way, i.e., 456890625 + 310076881 = 21375^2 + 17609^2 .

It is not an unprimeable number, because it can be changed into a prime (766967501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191741875 + ... + 191741878.

Almost surely, 2^766967506 is an apocalyptic number.

766967506 is a deficient number, since it is larger than the sum of its proper divisors (383483756).

766967506 is a wasteful number, since it uses less digits than its factorization.

766967506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383483755.

The product of its (nonzero) digits is 2857680, while the sum is 52.

The square root of 766967506 is about 27694.1781968702. The cubic root of 766967506 is about 915.3608243781.

The spelling of 766967506 in words is "seven hundred sixty-six million, nine hundred sixty-seven thousand, five hundred six".