126653646 has 32 divisors (see below), whose sum is σ = 291184128. Its totient is φ = 35975520.

The previous prime is 126653599. The next prime is 126653647. The reversal of 126653646 is 646356621.

It is a super-2 number, since 2×126653646² = 32082292090186632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126653647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1450 + ... + 15981.

It is an arithmetic number, because the mean of its divisors is an integer number (9099504).

Almost surely, 2^126653646 is an apocalyptic number.

126653646 is an abundant number, since it is smaller than the sum of its proper divisors (164530482).

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

126653646 is a wasteful number, since it uses less digits than its factorization.

126653646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17616.

The product of its digits is 155520, while the sum is 39.

The square root of 126653646 is about 11254.0502042598. The cubic root of 126653646 is about 502.1952093404.

The spelling of 126653646 in words is "one hundred twenty-six million, six hundred fifty-three thousand, six hundred forty-six".