66652229 has 16 divisors (see below), whose sum is σ = 79978752. Its totient is φ = 54307968.

The previous prime is 66652219. The next prime is 66652231. The reversal of 66652229 is 92225666.

It is a happy number.

It is not a de Polignac number, because 66652229 - 2⁸ = 66651973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66652192 and 66652201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66652219) 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, 26657 + ... + 29049.

It is an arithmetic number, because the mean of its divisors is an integer number (4998672).

Almost surely, 2^66652229 is an apocalyptic number.

It is an amenable number.

66652229 is a deficient number, since it is larger than the sum of its proper divisors (13326523).

66652229 is a wasteful number, since it uses less digits than its factorization.

66652229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596.

The product of its digits is 77760, while the sum is 38.

The square root of 66652229 is about 8164.0816384943. The cubic root of 66652229 is about 405.4508599899.

The spelling of 66652229 in words is "sixty-six million, six hundred fifty-two thousand, two hundred twenty-nine".