126700865 has 8 divisors (see below), whose sum is σ = 155749608. Its totient is φ = 98888320.

The previous prime is 126700853. The next prime is 126700877. The reversal of 126700865 is 568007621.

It is an interprime number because it is at equal distance from previous prime (126700853) and next prime (126700877).

It can be written as a sum of positive squares in 4 ways, for example, as 10233601 + 116467264 = 3199^2 + 10792^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126700865 - 2¹⁸ = 126438721 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308822 + ... + 309231.

It is an arithmetic number, because the mean of its divisors is an integer number (19468701).

Almost surely, 2^126700865 is an apocalyptic number.

It is an amenable number.

126700865 is a deficient number, since it is larger than the sum of its proper divisors (29048743).

126700865 is an equidigital number, since it uses as much as digits as its factorization.

126700865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618099.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 126700865 is about 11256.1478757166. The cubic root of 126700865 is about 502.2576110426.

The spelling of 126700865 in words is "one hundred twenty-six million, seven hundred thousand, eight hundred sixty-five".