126664007 has 4 divisors (see below), whose sum is σ = 127063896. Its totient is φ = 126264120.

The previous prime is 126664003. The next prime is 126664019. The reversal of 126664007 is 700466621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126664007 - 2² = 126664003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126664003) 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, 199469 + ... + 200102.

It is an arithmetic number, because the mean of its divisors is an integer number (31765974).

Almost surely, 2^126664007 is an apocalyptic number.

126664007 is a deficient number, since it is larger than the sum of its proper divisors (399889).

126664007 is an equidigital number, since it uses as much as digits as its factorization.

126664007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399888.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 126664007 is about 11254.5105180101. The cubic root of 126664007 is about 502.2089031236.

The spelling of 126664007 in words is "one hundred twenty-six million, six hundred sixty-four thousand, seven".