61867229 has 2 divisors, whose sum is σ = 61867230. Its totient is φ = 61867228.

The previous prime is 61867177. The next prime is 61867231. The reversal of 61867229 is 92276816.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40615129 + 21252100 = 6373^2 + 4610^2 .

It is a cyclic number.

It is not a de Polignac number, because 61867229 - 2¹² = 61863133 is a prime.

It is a super-3 number, since 3×61867229³ (a number of 24 digits) contains 333 as substring.

Together with 61867231, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61867129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30933614 + 30933615.

It is an arithmetic number, because the mean of its divisors is an integer number (30933615).

Almost surely, 2^61867229 is an apocalyptic number.

It is an amenable number.

61867229 is a deficient number, since it is larger than the sum of its proper divisors (1).

61867229 is an equidigital number, since it uses as much as digits as its factorization.

61867229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 61867229 is about 7865.5723885805. The cubic root of 61867229 is about 395.5064358160.

The spelling of 61867229 in words is "sixty-one million, eight hundred sixty-seven thousand, two hundred twenty-nine".