126606564 has 60 divisors (see below), whose sum is σ = 378263424. Its totient is φ = 36172656.

The previous prime is 126606539. The next prime is 126606569. The reversal of 126606564 is 465606621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (126606569) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25644 + ... + 30179.

Almost surely, 2^126606564 is an apocalyptic number.

126606564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

126606564 is an abundant number, since it is smaller than the sum of its proper divisors (251656860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126606564 is a wasteful number, since it uses less digits than its factorization.

126606564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55846 (or 55835 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 126606564 is about 11251.9582295705. The cubic root of 126606564 is about 502.1329732448.

The spelling of 126606564 in words is "one hundred twenty-six million, six hundred six thousand, five hundred sixty-four".