126690597 has 12 divisors (see below), whose sum is σ = 199633824. Its totient is φ = 76782120.

The previous prime is 126690593. The next prime is 126690631. The reversal of 126690597 is 795096621.

It is a happy number.

It is not a de Polignac number, because 126690597 - 2² = 126690593 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126690593) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 639753 + ... + 639950.

It is an arithmetic number, because the mean of its divisors is an integer number (16636152).

Almost surely, 2^126690597 is an apocalyptic number.

It is an amenable number.

126690597 is a deficient number, since it is larger than the sum of its proper divisors (72943227).

126690597 is a wasteful number, since it uses less digits than its factorization.

126690597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279720 (or 1279717 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 126690597 is about 11255.6917601718. The cubic root of 126690597 is about 502.2440428099.

The spelling of 126690597 in words is "one hundred twenty-six million, six hundred ninety thousand, five hundred ninety-seven".