766511442 has 12 divisors (see below), whose sum is σ = 1660774830. Its totient is φ = 255503808.

The previous prime is 766511401. The next prime is 766511489. The reversal of 766511442 is 244115667.

It can be written as a sum of positive squares in only one way, i.e., 580761801 + 185749641 = 24099^2 + 13629^2 .

It is a junction number, because it is equal to n+sod(n) for n = 766511397 and 766511406.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21291967 + ... + 21292002.

Almost surely, 2^766511442 is an apocalyptic number.

766511442 is an abundant number, since it is smaller than the sum of its proper divisors (894263388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

766511442 is a wasteful number, since it uses less digits than its factorization.

766511442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42583977 (or 42583974 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 766511442 is about 27685.9430397449. The cubic root of 766511442 is about 915.1793538947.

The spelling of 766511442 in words is "seven hundred sixty-six million, five hundred eleven thousand, four hundred forty-two".