766677481 has 4 divisors (see below), whose sum is σ = 787398532. Its totient is φ = 745956432.

The previous prime is 766677473. The next prime is 766677503. The reversal of 766677481 is 184776667.

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

It can be written as a sum of positive squares in 2 ways, for example, as 338560000 + 428117481 = 18400^2 + 20691^2 .

It is a cyclic number.

It is not a de Polignac number, because 766677481 - 2³ = 766677473 is a prime.

It is a super-2 number, since 2×766677481² = 1175588719745010722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (766677421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10360470 + ... + 10360543.

It is an arithmetic number, because the mean of its divisors is an integer number (196849633).

Almost surely, 2^766677481 is an apocalyptic number.

It is an amenable number.

766677481 is a deficient number, since it is larger than the sum of its proper divisors (20721051).

766677481 is a wasteful number, since it uses less digits than its factorization.

766677481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20721050.

The product of its digits is 2370816, while the sum is 52.

The square root of 766677481 is about 27688.9414929499. The cubic root of 766677481 is about 915.2454300965.

It can be divided in two parts, 76667 and 7481, that added together give a palindrome (84148).

The spelling of 766677481 in words is "seven hundred sixty-six million, six hundred seventy-seven thousand, four hundred eighty-one".