126791697 has 4 divisors (see below), whose sum is σ = 169055600. Its totient is φ = 84527796.

The previous prime is 126791689. The next prime is 126791701. The reversal of 126791697 is 796197621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 126791697 - 2³ = 126791689 is a prime.

It is a super-2 number, since 2×126791697² = 32152268856279618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126791647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21131947 + ... + 21131952.

It is an arithmetic number, because the mean of its divisors is an integer number (42263900).

Almost surely, 2^126791697 is an apocalyptic number.

It is an amenable number.

126791697 is a deficient number, since it is larger than the sum of its proper divisors (42263903).

126791697 is an equidigital number, since it uses as much as digits as its factorization.

126791697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42263902.

The product of its digits is 285768, while the sum is 48.

The square root of 126791697 is about 11260.1819257062. The cubic root of 126791697 is about 502.3776053977.

The spelling of 126791697 in words is "one hundred twenty-six million, seven hundred ninety-one thousand, six hundred ninety-seven".