166268651 has 2 divisors, whose sum is σ = 166268652. Its totient is φ = 166268650.

The previous prime is 166268621. The next prime is 166268681. The reversal of 166268651 is 156862661.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (166268621) and next prime (166268681).

It is a cyclic number.

It is not a de Polignac number, because 166268651 - 2²² = 162074347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166268599 and 166268608.

It is not a weakly prime, because it can be changed into another prime (166268611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83134325 + 83134326.

It is an arithmetic number, because the mean of its divisors is an integer number (83134326).

Almost surely, 2^166268651 is an apocalyptic number.

166268651 is a deficient number, since it is larger than the sum of its proper divisors (1).

166268651 is an equidigital number, since it uses as much as digits as its factorization.

166268651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The square root of 166268651 is about 12894.5201927020. The cubic root of 166268651 is about 549.8827860409.

The spelling of 166268651 in words is "one hundred sixty-six million, two hundred sixty-eight thousand, six hundred fifty-one".