126986651 has 16 divisors (see below), whose sum is σ = 147119328. Its totient is φ = 108326400.

The previous prime is 126986623. The next prime is 126986653. The reversal of 126986651 is 156689621.

It is a cyclic number.

It is not a de Polignac number, because 126986651 - 2²² = 122792347 is a prime.

It is a super-2 number, since 2×126986651² = 32251219064391602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126986653) 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, 77921 + ... + 79533.

It is an arithmetic number, because the mean of its divisors is an integer number (9194958).

Almost surely, 2^126986651 is an apocalyptic number.

126986651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

126986651 is a deficient number, since it is larger than the sum of its proper divisors (20132677).

126986651 is a wasteful number, since it uses less digits than its factorization.

126986651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062.

The product of its digits is 155520, while the sum is 44.

The square root of 126986651 is about 11268.8353879183. The cubic root of 126986651 is about 502.6349576042.

The spelling of 126986651 in words is "one hundred twenty-six million, nine hundred eighty-six thousand, six hundred fifty-one".