766439552 has 24 divisors (see below), whose sum is σ = 1527515535. Its totient is φ = 383063168.

The previous prime is 766439507. The next prime is 766439621. The reversal of 766439552 is 255934667.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 383219776 + 383219776 = 19576^2 + 19576^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=19576.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 766439497 and 766439506.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 311993 + ... + 314439.

Almost surely, 2^766439552 is an apocalyptic number.

It is an amenable number.

766439552 is a deficient number, since it is larger than the sum of its proper divisors (761075983).

766439552 is an frugal number, since it uses more digits than its factorization.

766439552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4908 (or 2449 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 47.

The square root of 766439552 is about 27684.6446970157. The cubic root of 766439552 is about 915.1507418841.

The spelling of 766439552 in words is "seven hundred sixty-six million, four hundred thirty-nine thousand, five hundred fifty-two".