126964665 has 40 divisors (see below), whose sum is σ = 231042240. Its totient is φ = 66689568.

The previous prime is 126964661. The next prime is 126964667. The reversal of 126964665 is 566469621.

It is not a de Polignac number, because 126964665 - 2² = 126964661 is a prime.

It is a super-2 number, since 2×126964665² = 32240052317124450, which contains 22 as substring.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 126964665.

It is not an unprimeable number, because it can be changed into a prime (126964661) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24796 + ... + 29474.

It is an arithmetic number, because the mean of its divisors is an integer number (5776056).

Almost surely, 2^126964665 is an apocalyptic number.

126964665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126964665 is a deficient number, since it is larger than the sum of its proper divisors (104077575).

126964665 is an equidigital number, since it uses as much as digits as its factorization.

126964665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763 (or 4754 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 126964665 is about 11267.8598234092. The cubic root of 126964665 is about 502.6059478095.

The spelling of 126964665 in words is "one hundred twenty-six million, nine hundred sixty-four thousand, six hundred sixty-five".