1286680270 has 16 divisors (see below), whose sum is σ = 2327666400. Its totient is φ = 512085024.

The previous prime is 1286680267. The next prime is 1286680273. The reversal of 1286680270 is 720866821.

It is an interprime number because it is at equal distance from previous prime (1286680267) and next prime (1286680273).

It is a super-2 number, since 2×1286680270² = 3311092234414545800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286680273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321297 + ... + 325276.

It is an arithmetic number, because the mean of its divisors is an integer number (145479150).

Almost surely, 2^1286680270 is an apocalyptic number.

1286680270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1286680270 is a deficient number, since it is larger than the sum of its proper divisors (1040986130).

1286680270 is a wasteful number, since it uses less digits than its factorization.

1286680270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646779.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1286680270 is about 35870.3257582086. The cubic root of 1286680270 is about 1087.6526287738.

The spelling of 1286680270 in words is "one billion, two hundred eighty-six million, six hundred eighty thousand, two hundred seventy".