1276016766 has 16 divisors (see below), whose sum is σ = 2571516288. Its totient is φ = 422091800.

The previous prime is 1276016759. The next prime is 1276016783. The reversal of 1276016766 is 6676106721.

It is a super-2 number, since 2×1276016766² = 3256437574226197512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810930 + ... + 812501.

It is an arithmetic number, because the mean of its divisors is an integer number (160719768).

Almost surely, 2^1276016766 is an apocalyptic number.

1276016766 is an abundant number, since it is smaller than the sum of its proper divisors (1295499522).

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

1276016766 is a wasteful number, since it uses less digits than its factorization.

1276016766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623567.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 1276016766 is about 35721.3768771586. The cubic root of 1276016766 is about 1084.6396096140.

The spelling of 1276016766 in words is "one billion, two hundred seventy-six million, sixteen thousand, seven hundred sixty-six".