1266079770 has 24 divisors (see below), whose sum is σ = 3291807636. Its totient is φ = 337621248.

The previous prime is 1266079757. The next prime is 1266079783. The reversal of 1266079770 is 779706621.

It is an interprime number because it is at equal distance from previous prime (1266079757) and next prime (1266079783).

It can be written as a sum of positive squares in 2 ways, for example, as 1245313521 + 20766249 = 35289^2 + 4557^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7033687 + ... + 7033866.

Almost surely, 2^1266079770 is an apocalyptic number.

1266079770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266079770 is an abundant number, since it is smaller than the sum of its proper divisors (2025727866).

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

1266079770 is a wasteful number, since it uses less digits than its factorization.

1266079770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14067566 (or 14067563 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 1266079770 is about 35582.0146984400. The cubic root of 1266079770 is about 1081.8167210972.

The spelling of 1266079770 in words is "one billion, two hundred sixty-six million, seventy-nine thousand, seven hundred seventy".